Home / 387,399.12-581,331.96-150,853.20

Finding the Fourth Proportional to 387,399.12, 581,331.96 and 150,853.20

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Solution

The fourth proportional to 387,399.12, 581,331.96 and 150,853.20 is: 226,370.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,399.12 : 581,331.96 = 150,853.20 : x
  2. Step 2: Convert to fraction form
    387,399.12/581,331.96 = 150,853.20/x
  3. Step 3: Cross multiply
    387,399.12x = 581,331.96 × 150,853.20
  4. Step 4: Simplify right side
    387,399.12x = 87,695,786,428.27
  5. Step 5: Solve for x
    x = 87,695,786,428.27/387,399.12
  6. Step 6: Final answer
    x = 226,370.64

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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.