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Finding the Fourth Proportional to 317,773.86, 476,654.60 and 128,229.20

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Solution

The fourth proportional to 317,773.86, 476,654.60 and 128,229.20 is: 192,341.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,773.86 : 476,654.60 = 128,229.20 : x
  2. Step 2: Convert to fraction form
    317,773.86/476,654.60 = 128,229.20/x
  3. Step 3: Cross multiply
    317,773.86x = 476,654.60 × 128,229.20
  4. Step 4: Simplify right side
    317,773.86x = 61,121,038,034.32
  5. Step 5: Solve for x
    x = 61,121,038,034.32/317,773.86
  6. Step 6: Final answer
    x = 192,341.30

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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.