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Finding the Fourth Proportional to 363,412.80, 544,082.40 and 321,940.80

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Solution

The fourth proportional to 363,412.80, 544,082.40 and 321,940.80 is: 481,992.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,412.80 : 544,082.40 = 321,940.80 : x
  2. Step 2: Convert to fraction form
    363,412.80/544,082.40 = 321,940.80/x
  3. Step 3: Cross multiply
    363,412.80x = 544,082.40 × 321,940.80
  4. Step 4: Simplify right side
    363,412.80x = 175,162,323,121.92
  5. Step 5: Solve for x
    x = 175,162,323,121.92/363,412.80
  6. Step 6: Final answer
    x = 481,992.72

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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.