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Finding the Fourth Proportional to 485,476.53, 728,213.73 and 130,490.54

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Solution

The fourth proportional to 485,476.53, 728,213.73 and 130,490.54 is: 195,735.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,476.53 : 728,213.73 = 130,490.54 : x
  2. Step 2: Convert to fraction form
    485,476.53/728,213.73 = 130,490.54/x
  3. Step 3: Cross multiply
    485,476.53x = 728,213.73 × 130,490.54
  4. Step 4: Simplify right side
    485,476.53x = 95,025,002,863.11
  5. Step 5: Solve for x
    x = 95,025,002,863.11/485,476.53
  6. Step 6: Final answer
    x = 195,735.52

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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.