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Finding the Fourth Proportional to 418,229.71, 626,991.87 and 181,394.01

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Solution

The fourth proportional to 418,229.71, 626,991.87 and 181,394.01 is: 271,938.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,229.71 : 626,991.87 = 181,394.01 : x
  2. Step 2: Convert to fraction form
    418,229.71/626,991.87 = 181,394.01/x
  3. Step 3: Cross multiply
    418,229.71x = 626,991.87 × 181,394.01
  4. Step 4: Simplify right side
    418,229.71x = 113,732,569,536.70
  5. Step 5: Solve for x
    x = 113,732,569,536.70/418,229.71
  6. Step 6: Final answer
    x = 271,938.04

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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.