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Finding the Fourth Proportional to 640,296.56, 960,482.42 and 240,940.78

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Solution

The fourth proportional to 640,296.56, 960,482.42 and 240,940.78 is: 361,425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,296.56 : 960,482.42 = 240,940.78 : x
  2. Step 2: Convert to fraction form
    640,296.56/960,482.42 = 240,940.78/x
  3. Step 3: Cross multiply
    640,296.56x = 960,482.42 × 240,940.78
  4. Step 4: Simplify right side
    640,296.56x = 231,419,382,104.00
  5. Step 5: Solve for x
    x = 231,419,382,104.00/640,296.56
  6. Step 6: Final answer
    x = 361,425.31

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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.