Home / 387,916.38-581,884.32-107,436.06

Finding the Fourth Proportional to 387,916.38, 581,884.32 and 107,436.06

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Solution

The fourth proportional to 387,916.38, 581,884.32 and 107,436.06 is: 161,156.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,916.38 : 581,884.32 = 107,436.06 : x
  2. Step 2: Convert to fraction form
    387,916.38/581,884.32 = 107,436.06/x
  3. Step 3: Cross multiply
    387,916.38x = 581,884.32 × 107,436.06
  4. Step 4: Simplify right side
    387,916.38x = 62,515,358,716.58
  5. Step 5: Solve for x
    x = 62,515,358,716.58/387,916.38
  6. Step 6: Final answer
    x = 161,156.79

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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.