Home / 387,220.38-534,376.08-217,458.15

Finding the Fourth Proportional to 387,220.38, 534,376.08 and 217,458.15

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Solution

The fourth proportional to 387,220.38, 534,376.08 and 217,458.15 is: 300,098.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,220.38 : 534,376.08 = 217,458.15 : x
  2. Step 2: Convert to fraction form
    387,220.38/534,376.08 = 217,458.15/x
  3. Step 3: Cross multiply
    387,220.38x = 534,376.08 × 217,458.15
  4. Step 4: Simplify right side
    387,220.38x = 116,204,433,761.05
  5. Step 5: Solve for x
    x = 116,204,433,761.05/387,220.38
  6. Step 6: Final answer
    x = 300,098.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.