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Finding the Fourth Proportional to 274,172.40, 378,358.92 and 159,478.56

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Solution

The fourth proportional to 274,172.40, 378,358.92 and 159,478.56 is: 220,081.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,172.40 : 378,358.92 = 159,478.56 : x
  2. Step 2: Convert to fraction form
    274,172.40/378,358.92 = 159,478.56/x
  3. Step 3: Cross multiply
    274,172.40x = 378,358.92 × 159,478.56
  4. Step 4: Simplify right side
    274,172.40x = 60,340,135,724.76
  5. Step 5: Solve for x
    x = 60,340,135,724.76/274,172.40
  6. Step 6: Final answer
    x = 220,081.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.