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Finding the Fourth Proportional to 485,393.64, 728,418.51 and 169,853.28

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Solution

The fourth proportional to 485,393.64, 728,418.51 and 169,853.28 is: 254,894.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,393.64 : 728,418.51 = 169,853.28 : x
  2. Step 2: Convert to fraction form
    485,393.64/728,418.51 = 169,853.28/x
  3. Step 3: Cross multiply
    485,393.64x = 728,418.51 × 169,853.28
  4. Step 4: Simplify right side
    485,393.64x = 123,724,273,136.21
  5. Step 5: Solve for x
    x = 123,724,273,136.21/485,393.64
  6. Step 6: Final answer
    x = 254,894.71

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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.