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Finding the Fourth Proportional to 247,880.71, 371,829.86 and 79,379.12

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Solution

The fourth proportional to 247,880.71, 371,829.86 and 79,379.12 is: 119,071.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,880.71 : 371,829.86 = 79,379.12 : x
  2. Step 2: Convert to fraction form
    247,880.71/371,829.86 = 79,379.12/x
  3. Step 3: Cross multiply
    247,880.71x = 371,829.86 × 79,379.12
  4. Step 4: Simplify right side
    247,880.71x = 29,515,527,906.87
  5. Step 5: Solve for x
    x = 29,515,527,906.87/247,880.71
  6. Step 6: Final answer
    x = 119,071.50

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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.