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Finding the Fourth Proportional to 485,467.88, 728,175.64 and 148,508.60

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Solution

The fourth proportional to 485,467.88, 728,175.64 and 148,508.60 is: 222,754.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,467.88 : 728,175.64 = 148,508.60 : x
  2. Step 2: Convert to fraction form
    485,467.88/728,175.64 = 148,508.60/x
  3. Step 3: Cross multiply
    485,467.88x = 728,175.64 × 148,508.60
  4. Step 4: Simplify right side
    485,467.88x = 108,140,344,850.50
  5. Step 5: Solve for x
    x = 108,140,344,850.50/485,467.88
  6. Step 6: Final answer
    x = 222,754.89

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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.