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Finding the Fourth Proportional to 663,404.80, 994,912.80 and 236,891.20

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Solution

The fourth proportional to 663,404.80, 994,912.80 and 236,891.20 is: 355,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,404.80 : 994,912.80 = 236,891.20 : x
  2. Step 2: Convert to fraction form
    663,404.80/994,912.80 = 236,891.20/x
  3. Step 3: Cross multiply
    663,404.80x = 994,912.80 × 236,891.20
  4. Step 4: Simplify right side
    663,404.80x = 235,686,087,087.36
  5. Step 5: Solve for x
    x = 235,686,087,087.36/663,404.80
  6. Step 6: Final answer
    x = 355,267.38

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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.