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Finding the Fourth Proportional to 247,247.62, 370,900.38 and 78,708.90

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Solution

The fourth proportional to 247,247.62, 370,900.38 and 78,708.90 is: 118,072.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,247.62 : 370,900.38 = 78,708.90 : x
  2. Step 2: Convert to fraction form
    247,247.62/370,900.38 = 78,708.90/x
  3. Step 3: Cross multiply
    247,247.62x = 370,900.38 × 78,708.90
  4. Step 4: Simplify right side
    247,247.62x = 29,193,160,919.38
  5. Step 5: Solve for x
    x = 29,193,160,919.38/247,247.62
  6. Step 6: Final answer
    x = 118,072.57

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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.