Home / 420,499.24-580,288.76-229,512.61

Finding the Fourth Proportional to 420,499.24, 580,288.76 and 229,512.61

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Solution

The fourth proportional to 420,499.24, 580,288.76 and 229,512.61 is: 316,727.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,499.24 : 580,288.76 = 229,512.61 : x
  2. Step 2: Convert to fraction form
    420,499.24/580,288.76 = 229,512.61/x
  3. Step 3: Cross multiply
    420,499.24x = 580,288.76 × 229,512.61
  4. Step 4: Simplify right side
    420,499.24x = 133,183,586,713.70
  5. Step 5: Solve for x
    x = 133,183,586,713.70/420,499.24
  6. Step 6: Final answer
    x = 316,727.30

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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.