Home / 420,912.12-580,837.03-229,888.60

Finding the Fourth Proportional to 420,912.12, 580,837.03 and 229,888.60

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Solution

The fourth proportional to 420,912.12, 580,837.03 and 229,888.60 is: 317,234.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,912.12 : 580,837.03 = 229,888.60 : x
  2. Step 2: Convert to fraction form
    420,912.12/580,837.03 = 229,888.60/x
  3. Step 3: Cross multiply
    420,912.12x = 580,837.03 × 229,888.60
  4. Step 4: Simplify right side
    420,912.12x = 133,527,811,654.86
  5. Step 5: Solve for x
    x = 133,527,811,654.86/420,912.12
  6. Step 6: Final answer
    x = 317,234.42

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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.