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Finding the Fourth Proportional to 225,585.28, 311,310.76 and 123,608.72

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Solution

The fourth proportional to 225,585.28, 311,310.76 and 123,608.72 is: 170,581.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,585.28 : 311,310.76 = 123,608.72 : x
  2. Step 2: Convert to fraction form
    225,585.28/311,310.76 = 123,608.72/x
  3. Step 3: Cross multiply
    225,585.28x = 311,310.76 × 123,608.72
  4. Step 4: Simplify right side
    225,585.28x = 38,480,724,565.83
  5. Step 5: Solve for x
    x = 38,480,724,565.83/225,585.28
  6. Step 6: Final answer
    x = 170,581.72

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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.