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Finding the Fourth Proportional to 272,608.68, 409,087.98 and 132,290.76

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Solution

The fourth proportional to 272,608.68, 409,087.98 and 132,290.76 is: 198,521.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,608.68 : 409,087.98 = 132,290.76 : x
  2. Step 2: Convert to fraction form
    272,608.68/409,087.98 = 132,290.76/x
  3. Step 3: Cross multiply
    272,608.68x = 409,087.98 × 132,290.76
  4. Step 4: Simplify right side
    272,608.68x = 54,118,559,781.06
  5. Step 5: Solve for x
    x = 54,118,559,781.06/272,608.68
  6. Step 6: Final answer
    x = 198,521.04

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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.