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Finding the Fourth Proportional to 274,869.20, 412,246.20 and 134,728.40

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Solution

The fourth proportional to 274,869.20, 412,246.20 and 134,728.40 is: 202,064.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,869.20 : 412,246.20 = 134,728.40 : x
  2. Step 2: Convert to fraction form
    274,869.20/412,246.20 = 134,728.40/x
  3. Step 3: Cross multiply
    274,869.20x = 412,246.20 × 134,728.40
  4. Step 4: Simplify right side
    274,869.20x = 55,541,270,932.08
  5. Step 5: Solve for x
    x = 55,541,270,932.08/274,869.20
  6. Step 6: Final answer
    x = 202,064.37

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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.