Home / 257,634,336.90-386,451,505.35-206,616,000.90

Finding the Fourth Proportional to 257,634,336.90, 386,451,505.35 and 206,616,000.90

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Solution

The fourth proportional to 257,634,336.90, 386,451,505.35 and 206,616,000.90 is: 309,924,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,634,336.90 : 386,451,505.35 = 206,616,000.90 : x
  2. Step 2: Convert to fraction form
    257,634,336.90/386,451,505.35 = 206,616,000.90/x
  3. Step 3: Cross multiply
    257,634,336.90x = 386,451,505.35 × 206,616,000.90
  4. Step 4: Simplify right side
    257,634,336.90x = 79,847,064,577,201,968
  5. Step 5: Solve for x
    x = 79,847,064,577,201,968/257,634,336.90
  6. Step 6: Final answer
    x = 309,924,001.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.