Home / 420,072.96-579,683.20-229,082.88

Finding the Fourth Proportional to 420,072.96, 579,683.20 and 229,082.88

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Solution

The fourth proportional to 420,072.96, 579,683.20 and 229,082.88 is: 316,124.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,072.96 : 579,683.20 = 229,082.88 : x
  2. Step 2: Convert to fraction form
    420,072.96/579,683.20 = 229,082.88/x
  3. Step 3: Cross multiply
    420,072.96x = 579,683.20 × 229,082.88
  4. Step 4: Simplify right side
    420,072.96x = 132,795,496,943.62
  5. Step 5: Solve for x
    x = 132,795,496,943.62/420,072.96
  6. Step 6: Final answer
    x = 316,124.84

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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.