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Finding the Fourth Proportional to 485,636.34, 728,010.76 and 169,921.02

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Solution

The fourth proportional to 485,636.34, 728,010.76 and 169,921.02 is: 254,726.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,636.34 : 728,010.76 = 169,921.02 : x
  2. Step 2: Convert to fraction form
    485,636.34/728,010.76 = 169,921.02/x
  3. Step 3: Cross multiply
    485,636.34x = 728,010.76 × 169,921.02
  4. Step 4: Simplify right side
    485,636.34x = 123,704,330,910.18
  5. Step 5: Solve for x
    x = 123,704,330,910.18/485,636.34
  6. Step 6: Final answer
    x = 254,726.26

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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.