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Finding the Fourth Proportional to 240,519.71, 360,766.51 and 90,756.38

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Solution

The fourth proportional to 240,519.71, 360,766.51 and 90,756.38 is: 136,129.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,519.71 : 360,766.51 = 90,756.38 : x
  2. Step 2: Convert to fraction form
    240,519.71/360,766.51 = 90,756.38/x
  3. Step 3: Cross multiply
    240,519.71x = 360,766.51 × 90,756.38
  4. Step 4: Simplify right side
    240,519.71x = 32,741,863,147.86
  5. Step 5: Solve for x
    x = 32,741,863,147.86/240,519.71
  6. Step 6: Final answer
    x = 136,129.65

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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.