Home / 387,821.70-581,732.55-107,338.95

Finding the Fourth Proportional to 387,821.70, 581,732.55 and 107,338.95

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Solution

The fourth proportional to 387,821.70, 581,732.55 and 107,338.95 is: 161,008.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,821.70 : 581,732.55 = 107,338.95 : x
  2. Step 2: Convert to fraction form
    387,821.70/581,732.55 = 107,338.95/x
  3. Step 3: Cross multiply
    387,821.70x = 581,732.55 × 107,338.95
  4. Step 4: Simplify right side
    387,821.70x = 62,442,561,097.82
  5. Step 5: Solve for x
    x = 62,442,561,097.82/387,821.70
  6. Step 6: Final answer
    x = 161,008.43

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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.