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Finding the Fourth Proportional to 374,538.79, 561,864.12 and 137,863.47

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Solution

The fourth proportional to 374,538.79, 561,864.12 and 137,863.47 is: 206,815.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,538.79 : 561,864.12 = 137,863.47 : x
  2. Step 2: Convert to fraction form
    374,538.79/561,864.12 = 137,863.47/x
  3. Step 3: Cross multiply
    374,538.79x = 561,864.12 × 137,863.47
  4. Step 4: Simplify right side
    374,538.79x = 77,460,537,251.70
  5. Step 5: Solve for x
    x = 77,460,537,251.70/374,538.79
  6. Step 6: Final answer
    x = 206,815.79

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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.