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Finding the Fourth Proportional to 485,757.50, 728,684.86 and 148,794.26

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Solution

The fourth proportional to 485,757.50, 728,684.86 and 148,794.26 is: 223,206.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,757.50 : 728,684.86 = 148,794.26 : x
  2. Step 2: Convert to fraction form
    485,757.50/728,684.86 = 148,794.26/x
  3. Step 3: Cross multiply
    485,757.50x = 728,684.86 × 148,794.26
  4. Step 4: Simplify right side
    485,757.50x = 108,424,124,516.90
  5. Step 5: Solve for x
    x = 108,424,124,516.90/485,757.50
  6. Step 6: Final answer
    x = 223,206.28

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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.