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Finding the Fourth Proportional to 485,757.26, 728,684.49 and 148,794.02

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Solution

The fourth proportional to 485,757.26, 728,684.49 and 148,794.02 is: 223,205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,757.26 : 728,684.49 = 148,794.02 : x
  2. Step 2: Convert to fraction form
    485,757.26/728,684.49 = 148,794.02/x
  3. Step 3: Cross multiply
    485,757.26x = 728,684.49 × 148,794.02
  4. Step 4: Simplify right side
    485,757.26x = 108,423,890,935.33
  5. Step 5: Solve for x
    x = 108,423,890,935.33/485,757.26
  6. Step 6: Final answer
    x = 223,205.91

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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.