Home / 420,310.04-580,029.75-229,327.43

Finding the Fourth Proportional to 420,310.04, 580,029.75 and 229,327.43

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Solution

The fourth proportional to 420,310.04, 580,029.75 and 229,327.43 is: 316,472.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,310.04 : 580,029.75 = 229,327.43 : x
  2. Step 2: Convert to fraction form
    420,310.04/580,029.75 = 229,327.43/x
  3. Step 3: Cross multiply
    420,310.04x = 580,029.75 × 229,327.43
  4. Step 4: Simplify right side
    420,310.04x = 133,016,728,990.89
  5. Step 5: Solve for x
    x = 133,016,728,990.89/420,310.04
  6. Step 6: Final answer
    x = 316,472.88

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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.