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Finding the Fourth Proportional to 374,279.29, 561,641.28 and 137,788.05

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Solution

The fourth proportional to 374,279.29, 561,641.28 and 137,788.05 is: 206,763.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,279.29 : 561,641.28 = 137,788.05 : x
  2. Step 2: Convert to fraction form
    374,279.29/561,641.28 = 137,788.05/x
  3. Step 3: Cross multiply
    374,279.29x = 561,641.28 × 137,788.05
  4. Step 4: Simplify right side
    374,279.29x = 77,387,456,770.70
  5. Step 5: Solve for x
    x = 77,387,456,770.70/374,279.29
  6. Step 6: Final answer
    x = 206,763.93

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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.