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Finding the Fourth Proportional to 485,395.52, 728,421.33 and 169,855.16

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Solution

The fourth proportional to 485,395.52, 728,421.33 and 169,855.16 is: 254,897.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,395.52 : 728,421.33 = 169,855.16 : x
  2. Step 2: Convert to fraction form
    485,395.52/728,421.33 = 169,855.16/x
  3. Step 3: Cross multiply
    485,395.52x = 728,421.33 × 169,855.16
  4. Step 4: Simplify right side
    485,395.52x = 123,726,121,554.56
  5. Step 5: Solve for x
    x = 123,726,121,554.56/485,395.52
  6. Step 6: Final answer
    x = 254,897.54

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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.