Home / 420,449.40-580,198.86-229,461.24

Finding the Fourth Proportional to 420,449.40, 580,198.86 and 229,461.24

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Solution

The fourth proportional to 420,449.40, 580,198.86 and 229,461.24 is: 316,644.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,449.40 : 580,198.86 = 229,461.24 : x
  2. Step 2: Convert to fraction form
    420,449.40/580,198.86 = 229,461.24/x
  3. Step 3: Cross multiply
    420,449.40x = 580,198.86 × 229,461.24
  4. Step 4: Simplify right side
    420,449.40x = 133,133,149,862.19
  5. Step 5: Solve for x
    x = 133,133,149,862.19/420,449.40
  6. Step 6: Final answer
    x = 316,644.88

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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.