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Finding the Fourth Proportional to 639,610.38, 959,240.43 and 240,220.26

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Solution

The fourth proportional to 639,610.38, 959,240.43 and 240,220.26 is: 360,264.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,610.38 : 959,240.43 = 240,220.26 : x
  2. Step 2: Convert to fraction form
    639,610.38/959,240.43 = 240,220.26/x
  3. Step 3: Cross multiply
    639,610.38x = 959,240.43 × 240,220.26
  4. Step 4: Simplify right side
    639,610.38x = 230,428,985,497.11
  5. Step 5: Solve for x
    x = 230,428,985,497.11/639,610.38
  6. Step 6: Final answer
    x = 360,264.61

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1.5x scale

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.