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Finding the Fourth Proportional to 247,287.60, 370,960.44 and 78,748.92

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Solution

The fourth proportional to 247,287.60, 370,960.44 and 78,748.92 is: 118,132.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,287.60 : 370,960.44 = 78,748.92 : x
  2. Step 2: Convert to fraction form
    247,287.60/370,960.44 = 78,748.92/x
  3. Step 3: Cross multiply
    247,287.60x = 370,960.44 × 78,748.92
  4. Step 4: Simplify right side
    247,287.60x = 29,212,734,012.72
  5. Step 5: Solve for x
    x = 29,212,734,012.72/247,287.60
  6. Step 6: Final answer
    x = 118,132.63

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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.