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Finding the Fourth Proportional to 345,152.78, 517,764.58 and 132,099.90

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Solution

The fourth proportional to 345,152.78, 517,764.58 and 132,099.90 is: 198,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,152.78 : 517,764.58 = 132,099.90 : x
  2. Step 2: Convert to fraction form
    345,152.78/517,764.58 = 132,099.90/x
  3. Step 3: Cross multiply
    345,152.78x = 517,764.58 × 132,099.90
  4. Step 4: Simplify right side
    345,152.78x = 68,396,649,241.54
  5. Step 5: Solve for x
    x = 68,396,649,241.54/345,152.78
  6. Step 6: Final answer
    x = 198,163.40

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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.