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Finding the Fourth Proportional to 247,219.57, 370,706.56 and 78,717.90

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Solution

The fourth proportional to 247,219.57, 370,706.56 and 78,717.90 is: 118,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,219.57 : 370,706.56 = 78,717.90 : x
  2. Step 2: Convert to fraction form
    247,219.57/370,706.56 = 78,717.90/x
  3. Step 3: Cross multiply
    247,219.57x = 370,706.56 × 78,717.90
  4. Step 4: Simplify right side
    247,219.57x = 29,181,241,722.63
  5. Step 5: Solve for x
    x = 29,181,241,722.63/247,219.57
  6. Step 6: Final answer
    x = 118,037.75

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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.