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Finding the Fourth Proportional to 274,809.18, 412,194.06 and 85,264.68

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Solution

The fourth proportional to 274,809.18, 412,194.06 and 85,264.68 is: 127,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,809.18 : 412,194.06 = 85,264.68 : x
  2. Step 2: Convert to fraction form
    274,809.18/412,194.06 = 85,264.68/x
  3. Step 3: Cross multiply
    274,809.18x = 412,194.06 × 85,264.68
  4. Step 4: Simplify right side
    274,809.18x = 35,145,594,623.80
  5. Step 5: Solve for x
    x = 35,145,594,623.80/274,809.18
  6. Step 6: Final answer
    x = 127,890.90

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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.