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Finding the Fourth Proportional to 392,487.71, 541,626.48 and 220,407.26

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Solution

The fourth proportional to 392,487.71, 541,626.48 and 220,407.26 is: 304,158.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,487.71 : 541,626.48 = 220,407.26 : x
  2. Step 2: Convert to fraction form
    392,487.71/541,626.48 = 220,407.26/x
  3. Step 3: Cross multiply
    392,487.71x = 541,626.48 × 220,407.26
  4. Step 4: Simplify right side
    392,487.71x = 119,378,405,692.11
  5. Step 5: Solve for x
    x = 119,378,405,692.11/392,487.71
  6. Step 6: Final answer
    x = 304,158.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.