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Finding the Fourth Proportional to 387,737.89, 581,607.03 and 121,519.14

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Solution

The fourth proportional to 387,737.89, 581,607.03 and 121,519.14 is: 182,278.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,737.89 : 581,607.03 = 121,519.14 : x
  2. Step 2: Convert to fraction form
    387,737.89/581,607.03 = 121,519.14/x
  3. Step 3: Cross multiply
    387,737.89x = 581,607.03 × 121,519.14
  4. Step 4: Simplify right side
    387,737.89x = 70,676,384,378.22
  5. Step 5: Solve for x
    x = 70,676,384,378.22/387,737.89
  6. Step 6: Final answer
    x = 182,278.77

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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.