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Finding the Fourth Proportional to 240,305.28, 360,419.94 and 80,379.96

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Solution

The fourth proportional to 240,305.28, 360,419.94 and 80,379.96 is: 120,557.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,305.28 : 360,419.94 = 80,379.96 : x
  2. Step 2: Convert to fraction form
    240,305.28/360,419.94 = 80,379.96/x
  3. Step 3: Cross multiply
    240,305.28x = 360,419.94 × 80,379.96
  4. Step 4: Simplify right side
    240,305.28x = 28,970,540,360.40
  5. Step 5: Solve for x
    x = 28,970,540,360.40/240,305.28
  6. Step 6: Final answer
    x = 120,557.24

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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.