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Finding the Fourth Proportional to 247,359.99, 371,100.39 and 78,880.33

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Solution

The fourth proportional to 247,359.99, 371,100.39 and 78,880.33 is: 118,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,359.99 : 371,100.39 = 78,880.33 : x
  2. Step 2: Convert to fraction form
    247,359.99/371,100.39 = 78,880.33/x
  3. Step 3: Cross multiply
    247,359.99x = 371,100.39 × 78,880.33
  4. Step 4: Simplify right side
    247,359.99x = 29,272,521,394.40
  5. Step 5: Solve for x
    x = 29,272,521,394.40/247,359.99
  6. Step 6: Final answer
    x = 118,339.76

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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.