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Finding the Fourth Proportional to 485,740.08, 728,649 and 148,807.44

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Solution

The fourth proportional to 485,740.08, 728,649 and 148,807.44 is: 223,223.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,740.08 : 728,649 = 148,807.44 : x
  2. Step 2: Convert to fraction form
    485,740.08/728,649 = 148,807.44/x
  3. Step 3: Cross multiply
    485,740.08x = 728,649 × 148,807.44
  4. Step 4: Simplify right side
    485,740.08x = 108,428,392,348.56
  5. Step 5: Solve for x
    x = 108,428,392,348.56/485,740.08
  6. Step 6: Final answer
    x = 223,223.07

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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.