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Finding the Fourth Proportional to 485,702.57, 728,112.78 and 169,987.25

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Solution

The fourth proportional to 485,702.57, 728,112.78 and 169,987.25 is: 254,826.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,702.57 : 728,112.78 = 169,987.25 : x
  2. Step 2: Convert to fraction form
    485,702.57/728,112.78 = 169,987.25/x
  3. Step 3: Cross multiply
    485,702.57x = 728,112.78 × 169,987.25
  4. Step 4: Simplify right side
    485,702.57x = 123,769,885,521.49
  5. Step 5: Solve for x
    x = 123,769,885,521.49/485,702.57
  6. Step 6: Final answer
    x = 254,826.50

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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.