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Finding the Fourth Proportional to 345,751.66, 518,331.67 and 132,672.49

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Solution

The fourth proportional to 345,751.66, 518,331.67 and 132,672.49 is: 198,895.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,751.66 : 518,331.67 = 132,672.49 : x
  2. Step 2: Convert to fraction form
    345,751.66/518,331.67 = 132,672.49/x
  3. Step 3: Cross multiply
    345,751.66x = 518,331.67 × 132,672.49
  4. Step 4: Simplify right side
    345,751.66x = 68,768,353,304.76
  5. Step 5: Solve for x
    x = 68,768,353,304.76/345,751.66
  6. Step 6: Final answer
    x = 198,895.22

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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.