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Finding the Fourth Proportional to 286,594.80, 429,892.20 and 198,121.20

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Solution

The fourth proportional to 286,594.80, 429,892.20 and 198,121.20 is: 297,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,594.80 : 429,892.20 = 198,121.20 : x
  2. Step 2: Convert to fraction form
    286,594.80/429,892.20 = 198,121.20/x
  3. Step 3: Cross multiply
    286,594.80x = 429,892.20 × 198,121.20
  4. Step 4: Simplify right side
    286,594.80x = 85,170,758,534.64
  5. Step 5: Solve for x
    x = 85,170,758,534.64/286,594.80
  6. Step 6: Final answer
    x = 297,181.80

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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.