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Finding the Fourth Proportional to 640,029.34, 960,422.76 and 235,505.61

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Solution

The fourth proportional to 640,029.34, 960,422.76 and 235,505.61 is: 353,397.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,029.34 : 960,422.76 = 235,505.61 : x
  2. Step 2: Convert to fraction form
    640,029.34/960,422.76 = 235,505.61/x
  3. Step 3: Cross multiply
    640,029.34x = 960,422.76 × 235,505.61
  4. Step 4: Simplify right side
    640,029.34x = 226,184,949,310.90
  5. Step 5: Solve for x
    x = 226,184,949,310.90/640,029.34
  6. Step 6: Final answer
    x = 353,397.78

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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.