Home / 258,331.29-387,504.27-71,342.79

Finding the Fourth Proportional to 258,331.29, 387,504.27 and 71,342.79

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Solution

The fourth proportional to 258,331.29, 387,504.27 and 71,342.79 is: 107,016.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,331.29 : 387,504.27 = 71,342.79 : x
  2. Step 2: Convert to fraction form
    258,331.29/387,504.27 = 71,342.79/x
  3. Step 3: Cross multiply
    258,331.29x = 387,504.27 × 71,342.79
  4. Step 4: Simplify right side
    258,331.29x = 27,645,635,758.71
  5. Step 5: Solve for x
    x = 27,645,635,758.71/258,331.29
  6. Step 6: Final answer
    x = 107,016.21

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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.