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Finding the Fourth Proportional to 385,381.80, 576,711.90 and 336,004.20

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Solution

The fourth proportional to 385,381.80, 576,711.90 and 336,004.20 is: 502,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,381.80 : 576,711.90 = 336,004.20 : x
  2. Step 2: Convert to fraction form
    385,381.80/576,711.90 = 336,004.20/x
  3. Step 3: Cross multiply
    385,381.80x = 576,711.90 × 336,004.20
  4. Step 4: Simplify right side
    385,381.80x = 193,777,620,589.98
  5. Step 5: Solve for x
    x = 193,777,620,589.98/385,381.80
  6. Step 6: Final answer
    x = 502,819.85

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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.