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Finding the Fourth Proportional to 443,272.68, 664,842.89 and 123,391.13

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Solution

The fourth proportional to 443,272.68, 664,842.89 and 123,391.13 is: 185,068.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,272.68 : 664,842.89 = 123,391.13 : x
  2. Step 2: Convert to fraction form
    443,272.68/664,842.89 = 123,391.13/x
  3. Step 3: Cross multiply
    443,272.68x = 664,842.89 × 123,391.13
  4. Step 4: Simplify right side
    443,272.68x = 82,035,711,528.40
  5. Step 5: Solve for x
    x = 82,035,711,528.40/443,272.68
  6. Step 6: Final answer
    x = 185,068.28

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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.