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Finding the Fourth Proportional to 247,160.76, 370,608.21 and 78,635.40

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Solution

The fourth proportional to 247,160.76, 370,608.21 and 78,635.40 is: 117,910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,160.76 : 370,608.21 = 78,635.40 : x
  2. Step 2: Convert to fraction form
    247,160.76/370,608.21 = 78,635.40/x
  3. Step 3: Cross multiply
    247,160.76x = 370,608.21 × 78,635.40
  4. Step 4: Simplify right side
    247,160.76x = 29,142,924,836.63
  5. Step 5: Solve for x
    x = 29,142,924,836.63/247,160.76
  6. Step 6: Final answer
    x = 117,910.81

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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.