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Finding the Fourth Proportional to 639,605.88, 959,233.68 and 240,215.76

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Solution

The fourth proportional to 639,605.88, 959,233.68 and 240,215.76 is: 360,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,605.88 : 959,233.68 = 240,215.76 : x
  2. Step 2: Convert to fraction form
    639,605.88/959,233.68 = 240,215.76/x
  3. Step 3: Cross multiply
    639,605.88x = 959,233.68 × 240,215.76
  4. Step 4: Simplify right side
    639,605.88x = 230,423,047,458.80
  5. Step 5: Solve for x
    x = 230,423,047,458.80/639,605.88
  6. Step 6: Final answer
    x = 360,257.86

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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.