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Finding the Fourth Proportional to 485,905.92, 728,355.84 and 236,277.76

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Solution

The fourth proportional to 485,905.92, 728,355.84 and 236,277.76 is: 354,172.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,905.92 : 728,355.84 = 236,277.76 : x
  2. Step 2: Convert to fraction form
    485,905.92/728,355.84 = 236,277.76/x
  3. Step 3: Cross multiply
    485,905.92x = 728,355.84 × 236,277.76
  4. Step 4: Simplify right side
    485,905.92x = 172,094,286,358.12
  5. Step 5: Solve for x
    x = 172,094,286,358.12/485,905.92
  6. Step 6: Final answer
    x = 354,172.03

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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.