Home / 387,904.38-581,866.32-107,424.06

Finding the Fourth Proportional to 387,904.38, 581,866.32 and 107,424.06

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Solution

The fourth proportional to 387,904.38, 581,866.32 and 107,424.06 is: 161,138.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,904.38 : 581,866.32 = 107,424.06 : x
  2. Step 2: Convert to fraction form
    387,904.38/581,866.32 = 107,424.06/x
  3. Step 3: Cross multiply
    387,904.38x = 581,866.32 × 107,424.06
  4. Step 4: Simplify right side
    387,904.38x = 62,506,442,471.66
  5. Step 5: Solve for x
    x = 62,506,442,471.66/387,904.38
  6. Step 6: Final answer
    x = 161,138.79

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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.