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Finding the Fourth Proportional to 268,334.70, 402,515.82 and 68,656.80

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Solution

The fourth proportional to 268,334.70, 402,515.82 and 68,656.80 is: 102,988.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,334.70 : 402,515.82 = 68,656.80 : x
  2. Step 2: Convert to fraction form
    268,334.70/402,515.82 = 68,656.80/x
  3. Step 3: Cross multiply
    268,334.70x = 402,515.82 × 68,656.80
  4. Step 4: Simplify right side
    268,334.70x = 27,635,448,150.58
  5. Step 5: Solve for x
    x = 27,635,448,150.58/268,334.70
  6. Step 6: Final answer
    x = 102,988.72

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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.