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Finding the Fourth Proportional to 531,397.34, 797,268.14 and 318,131.90

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Solution

The fourth proportional to 531,397.34, 797,268.14 and 318,131.90 is: 477,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,397.34 : 797,268.14 = 318,131.90 : x
  2. Step 2: Convert to fraction form
    531,397.34/797,268.14 = 318,131.90/x
  3. Step 3: Cross multiply
    531,397.34x = 797,268.14 × 318,131.90
  4. Step 4: Simplify right side
    531,397.34x = 253,636,428,187.67
  5. Step 5: Solve for x
    x = 253,636,428,187.67/531,397.34
  6. Step 6: Final answer
    x = 477,300.90

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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.