Home / 218,845.19-328,267.47-85,631.96

Finding the Fourth Proportional to 218,845.19, 328,267.47 and 85,631.96

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Solution

The fourth proportional to 218,845.19, 328,267.47 and 85,631.96 is: 128,447.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,845.19 : 328,267.47 = 85,631.96 : x
  2. Step 2: Convert to fraction form
    218,845.19/328,267.47 = 85,631.96/x
  3. Step 3: Cross multiply
    218,845.19x = 328,267.47 × 85,631.96
  4. Step 4: Simplify right side
    218,845.19x = 28,110,188,002.13
  5. Step 5: Solve for x
    x = 28,110,188,002.13/218,845.19
  6. Step 6: Final answer
    x = 128,447.82

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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.