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Finding the Fourth Proportional to 498,045.62, 687,301.52 and 271,689.50

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Solution

The fourth proportional to 498,045.62, 687,301.52 and 271,689.50 is: 374,930.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,045.62 : 687,301.52 = 271,689.50 : x
  2. Step 2: Convert to fraction form
    498,045.62/687,301.52 = 271,689.50/x
  3. Step 3: Cross multiply
    498,045.62x = 687,301.52 × 271,689.50
  4. Step 4: Simplify right side
    498,045.62x = 186,732,606,318.04
  5. Step 5: Solve for x
    x = 186,732,606,318.04/498,045.62
  6. Step 6: Final answer
    x = 374,930.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.