Home / 257,830,740.40-386,746,110.60-199,380,103.60

Finding the Fourth Proportional to 257,830,740.40, 386,746,110.60 and 199,380,103.60

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Solution

The fourth proportional to 257,830,740.40, 386,746,110.60 and 199,380,103.60 is: 299,070,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,830,740.40 : 386,746,110.60 = 199,380,103.60 : x
  2. Step 2: Convert to fraction form
    257,830,740.40/386,746,110.60 = 199,380,103.60/x
  3. Step 3: Cross multiply
    257,830,740.40x = 386,746,110.60 × 199,380,103.60
  4. Step 4: Simplify right side
    257,830,740.40x = 77,109,479,598,325,056
  5. Step 5: Solve for x
    x = 77,109,479,598,325,056/257,830,740.40
  6. Step 6: Final answer
    x = 299,070,155.40

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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.