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Finding the Fourth Proportional to 247,991.22, 371,989.87 and 70,497.95

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Solution

The fourth proportional to 247,991.22, 371,989.87 and 70,497.95 is: 105,747.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,991.22 : 371,989.87 = 70,497.95 : x
  2. Step 2: Convert to fraction form
    247,991.22/371,989.87 = 70,497.95/x
  3. Step 3: Cross multiply
    247,991.22x = 371,989.87 × 70,497.95
  4. Step 4: Simplify right side
    247,991.22x = 26,224,521,219.57
  5. Step 5: Solve for x
    x = 26,224,521,219.57/247,991.22
  6. Step 6: Final answer
    x = 105,747.78

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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.