Home / 420,711.12-580,581.30-229,724.64

Finding the Fourth Proportional to 420,711.12, 580,581.30 and 229,724.64

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Solution

The fourth proportional to 420,711.12, 580,581.30 and 229,724.64 is: 317,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,711.12 : 580,581.30 = 229,724.64 : x
  2. Step 2: Convert to fraction form
    420,711.12/580,581.30 = 229,724.64/x
  3. Step 3: Cross multiply
    420,711.12x = 580,581.30 × 229,724.64
  4. Step 4: Simplify right side
    420,711.12x = 133,373,830,133.23
  5. Step 5: Solve for x
    x = 133,373,830,133.23/420,711.12
  6. Step 6: Final answer
    x = 317,019.98

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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.