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Finding the Fourth Proportional to 384,536.57, 576,425.76 and 135,043.61

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Solution

The fourth proportional to 384,536.57, 576,425.76 and 135,043.61 is: 202,432.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,536.57 : 576,425.76 = 135,043.61 : x
  2. Step 2: Convert to fraction form
    384,536.57/576,425.76 = 135,043.61/x
  3. Step 3: Cross multiply
    384,536.57x = 576,425.76 × 135,043.61
  4. Step 4: Simplify right side
    384,536.57x = 77,842,612,645.26
  5. Step 5: Solve for x
    x = 77,842,612,645.26/384,536.57
  6. Step 6: Final answer
    x = 202,432.28

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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.