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Finding the Fourth Proportional to 342,487.53, 513,878.31 and 132,273.09

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Solution

The fourth proportional to 342,487.53, 513,878.31 and 132,273.09 is: 198,466.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,487.53 : 513,878.31 = 132,273.09 : x
  2. Step 2: Convert to fraction form
    342,487.53/513,878.31 = 132,273.09/x
  3. Step 3: Cross multiply
    342,487.53x = 513,878.31 × 132,273.09
  4. Step 4: Simplify right side
    342,487.53x = 67,972,271,947.68
  5. Step 5: Solve for x
    x = 67,972,271,947.68/342,487.53
  6. Step 6: Final answer
    x = 198,466.41

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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.