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Finding the Fourth Proportional to 640,113.08, 960,312.59 and 240,757.29

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Solution

The fourth proportional to 640,113.08, 960,312.59 and 240,757.29 is: 361,189.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,113.08 : 960,312.59 = 240,757.29 : x
  2. Step 2: Convert to fraction form
    640,113.08/960,312.59 = 240,757.29/x
  3. Step 3: Cross multiply
    640,113.08x = 960,312.59 × 240,757.29
  4. Step 4: Simplify right side
    640,113.08x = 231,202,255,517.50
  5. Step 5: Solve for x
    x = 231,202,255,517.50/640,113.08
  6. Step 6: Final answer
    x = 361,189.71

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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.