Home / 442,082.20-663,123.30-331,490.20

Finding the Fourth Proportional to 442,082.20, 663,123.30 and 331,490.20

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Solution

The fourth proportional to 442,082.20, 663,123.30 and 331,490.20 is: 497,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,082.20 : 663,123.30 = 331,490.20 : x
  2. Step 2: Convert to fraction form
    442,082.20/663,123.30 = 331,490.20/x
  3. Step 3: Cross multiply
    442,082.20x = 663,123.30 × 331,490.20
  4. Step 4: Simplify right side
    442,082.20x = 219,818,875,341.66
  5. Step 5: Solve for x
    x = 219,818,875,341.66/442,082.20
  6. Step 6: Final answer
    x = 497,235.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.