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Finding the Fourth Proportional to 485,758.01, 728,636.37 and 130,772.42

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Solution

The fourth proportional to 485,758.01, 728,636.37 and 130,772.42 is: 196,158.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,758.01 : 728,636.37 = 130,772.42 : x
  2. Step 2: Convert to fraction form
    485,758.01/728,636.37 = 130,772.42/x
  3. Step 3: Cross multiply
    485,758.01x = 728,636.37 × 130,772.42
  4. Step 4: Simplify right side
    485,758.01x = 95,285,541,404.92
  5. Step 5: Solve for x
    x = 95,285,541,404.92/485,758.01
  6. Step 6: Final answer
    x = 196,158.46

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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.