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Finding the Fourth Proportional to 345,335.91, 518,039.87 and 132,103.41

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Solution

The fourth proportional to 345,335.91, 518,039.87 and 132,103.41 is: 198,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,335.91 : 518,039.87 = 132,103.41 : x
  2. Step 2: Convert to fraction form
    345,335.91/518,039.87 = 132,103.41/x
  3. Step 3: Cross multiply
    345,335.91x = 518,039.87 × 132,103.41
  4. Step 4: Simplify right side
    345,335.91x = 68,434,833,342.96
  5. Step 5: Solve for x
    x = 68,434,833,342.96/345,335.91
  6. Step 6: Final answer
    x = 198,168.89

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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.