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Finding the Fourth Proportional to 345,751.43, 518,331.30 and 132,672.24

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Solution

The fourth proportional to 345,751.43, 518,331.30 and 132,672.24 is: 198,894.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,751.43 : 518,331.30 = 132,672.24 : x
  2. Step 2: Convert to fraction form
    345,751.43/518,331.30 = 132,672.24/x
  3. Step 3: Cross multiply
    345,751.43x = 518,331.30 × 132,672.24
  4. Step 4: Simplify right side
    345,751.43x = 68,768,174,633.11
  5. Step 5: Solve for x
    x = 68,768,174,633.11/345,751.43
  6. Step 6: Final answer
    x = 198,894.84

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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.