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Finding the Fourth Proportional to 485,607.56, 728,385.35 and 148,648.37

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Solution

The fourth proportional to 485,607.56, 728,385.35 and 148,648.37 is: 222,964.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,607.56 : 728,385.35 = 148,648.37 : x
  2. Step 2: Convert to fraction form
    485,607.56/728,385.35 = 148,648.37/x
  3. Step 3: Cross multiply
    485,607.56x = 728,385.35 × 148,648.37
  4. Step 4: Simplify right side
    485,607.56x = 108,273,290,624.21
  5. Step 5: Solve for x
    x = 108,273,290,624.21/485,607.56
  6. Step 6: Final answer
    x = 222,964.59

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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.