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Finding the Fourth Proportional to 240,140.81, 360,211.20 and 90,414.68

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Solution

The fourth proportional to 240,140.81, 360,211.20 and 90,414.68 is: 135,622.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,140.81 : 360,211.20 = 90,414.68 : x
  2. Step 2: Convert to fraction form
    240,140.81/360,211.20 = 90,414.68/x
  3. Step 3: Cross multiply
    240,140.81x = 360,211.20 × 90,414.68
  4. Step 4: Simplify right side
    240,140.81x = 32,568,381,620.00
  5. Step 5: Solve for x
    x = 32,568,381,620.00/240,140.81
  6. Step 6: Final answer
    x = 135,622.02

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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.