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Finding the Fourth Proportional to 363,872.80, 545,809.20 and 310,728.70

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Solution

The fourth proportional to 363,872.80, 545,809.20 and 310,728.70 is: 466,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,872.80 : 545,809.20 = 310,728.70 : x
  2. Step 2: Convert to fraction form
    363,872.80/545,809.20 = 310,728.70/x
  3. Step 3: Cross multiply
    363,872.80x = 545,809.20 × 310,728.70
  4. Step 4: Simplify right side
    363,872.80x = 169,598,583,164.04
  5. Step 5: Solve for x
    x = 169,598,583,164.04/363,872.80
  6. Step 6: Final answer
    x = 466,093.05

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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.