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Finding the Fourth Proportional to 255,387.32, 383,077.43 and 87,024.97

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Solution

The fourth proportional to 255,387.32, 383,077.43 and 87,024.97 is: 130,536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,387.32 : 383,077.43 = 87,024.97 : x
  2. Step 2: Convert to fraction form
    255,387.32/383,077.43 = 87,024.97/x
  3. Step 3: Cross multiply
    255,387.32x = 383,077.43 × 87,024.97
  4. Step 4: Simplify right side
    255,387.32x = 33,337,301,853.43
  5. Step 5: Solve for x
    x = 33,337,301,853.43/255,387.32
  6. Step 6: Final answer
    x = 130,536.25

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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.