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Finding the Fourth Proportional to 387,002.52, 580,459.92 and 134,236.32

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Solution

The fourth proportional to 387,002.52, 580,459.92 and 134,236.32 is: 201,339.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,002.52 : 580,459.92 = 134,236.32 : x
  2. Step 2: Convert to fraction form
    387,002.52/580,459.92 = 134,236.32/x
  3. Step 3: Cross multiply
    387,002.52x = 580,459.92 × 134,236.32
  4. Step 4: Simplify right side
    387,002.52x = 77,918,803,568.29
  5. Step 5: Solve for x
    x = 77,918,803,568.29/387,002.52
  6. Step 6: Final answer
    x = 201,339.27

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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.