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Finding the Fourth Proportional to 247,559.67, 371,336.55 and 79,077.78

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Solution

The fourth proportional to 247,559.67, 371,336.55 and 79,077.78 is: 118,615.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,559.67 : 371,336.55 = 79,077.78 : x
  2. Step 2: Convert to fraction form
    247,559.67/371,336.55 = 79,077.78/x
  3. Step 3: Cross multiply
    247,559.67x = 371,336.55 × 79,077.78
  4. Step 4: Simplify right side
    247,559.67x = 29,364,470,006.86
  5. Step 5: Solve for x
    x = 29,364,470,006.86/247,559.67
  6. Step 6: Final answer
    x = 118,615.73

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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.