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Finding the Fourth Proportional to 274,890.29, 412,399.96 and 85,340.97

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Solution

The fourth proportional to 274,890.29, 412,399.96 and 85,340.97 is: 128,031.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,890.29 : 412,399.96 = 85,340.97 : x
  2. Step 2: Convert to fraction form
    274,890.29/412,399.96 = 85,340.97/x
  3. Step 3: Cross multiply
    274,890.29x = 412,399.96 × 85,340.97
  4. Step 4: Simplify right side
    274,890.29x = 35,194,612,401.01
  5. Step 5: Solve for x
    x = 35,194,612,401.01/274,890.29
  6. Step 6: Final answer
    x = 128,031.49

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1.5x scale

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.