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Finding the Fourth Proportional to 485,459.28, 728,118.63 and 148,409.46

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Solution

The fourth proportional to 485,459.28, 728,118.63 and 148,409.46 is: 222,592.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,459.28 : 728,118.63 = 148,409.46 : x
  2. Step 2: Convert to fraction form
    485,459.28/728,118.63 = 148,409.46/x
  3. Step 3: Cross multiply
    485,459.28x = 728,118.63 × 148,409.46
  4. Step 4: Simplify right side
    485,459.28x = 108,059,692,694.24
  5. Step 5: Solve for x
    x = 108,059,692,694.24/485,459.28
  6. Step 6: Final answer
    x = 222,592.70

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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.