Home / 485,142.72-727,408.68-148,071.24

Finding the Fourth Proportional to 485,142.72, 727,408.68 and 148,071.24

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Solution

The fourth proportional to 485,142.72, 727,408.68 and 148,071.24 is: 222,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,142.72 : 727,408.68 = 148,071.24 : x
  2. Step 2: Convert to fraction form
    485,142.72/727,408.68 = 148,071.24/x
  3. Step 3: Cross multiply
    485,142.72x = 727,408.68 × 148,071.24
  4. Step 4: Simplify right side
    485,142.72x = 107,708,305,234.36
  5. Step 5: Solve for x
    x = 107,708,305,234.36/485,142.72
  6. Step 6: Final answer
    x = 222,013.65

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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.