Home / 485,408.10-727,540.26-218,856.54

Finding the Fourth Proportional to 485,408.10, 727,540.26 and 218,856.54

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Solution

The fourth proportional to 485,408.10, 727,540.26 and 218,856.54 is: 328,026.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,408.10 : 727,540.26 = 218,856.54 : x
  2. Step 2: Convert to fraction form
    485,408.10/727,540.26 = 218,856.54/x
  3. Step 3: Cross multiply
    485,408.10x = 727,540.26 × 218,856.54
  4. Step 4: Simplify right side
    485,408.10x = 159,226,944,014.30
  5. Step 5: Solve for x
    x = 159,226,944,014.30/485,408.10
  6. Step 6: Final answer
    x = 328,026.96

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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.