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Finding the Fourth Proportional to 485,253.17, 727,947.80 and 169,638.29

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Solution

The fourth proportional to 485,253.17, 727,947.80 and 169,638.29 is: 254,481.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,253.17 : 727,947.80 = 169,638.29 : x
  2. Step 2: Convert to fraction form
    485,253.17/727,947.80 = 169,638.29/x
  3. Step 3: Cross multiply
    485,253.17x = 727,947.80 × 169,638.29
  4. Step 4: Simplify right side
    485,253.17x = 123,487,819,153.07
  5. Step 5: Solve for x
    x = 123,487,819,153.07/485,253.17
  6. Step 6: Final answer
    x = 254,481.22

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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.