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Finding the Fourth Proportional to 377,282.28, 520,385.72 and 256,213.20

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Solution

The fourth proportional to 377,282.28, 520,385.72 and 256,213.20 is: 353,395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,282.28 : 520,385.72 = 256,213.20 : x
  2. Step 2: Convert to fraction form
    377,282.28/520,385.72 = 256,213.20/x
  3. Step 3: Cross multiply
    377,282.28x = 520,385.72 × 256,213.20
  4. Step 4: Simplify right side
    377,282.28x = 133,329,690,555.50
  5. Step 5: Solve for x
    x = 133,329,690,555.50/377,282.28
  6. Step 6: Final answer
    x = 353,395.05

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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.