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Finding the Fourth Proportional to 268,327.07, 402,486.49 and 68,645.76

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Solution

The fourth proportional to 268,327.07, 402,486.49 and 68,645.76 is: 102,967.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,327.07 : 402,486.49 = 68,645.76 : x
  2. Step 2: Convert to fraction form
    268,327.07/402,486.49 = 68,645.76/x
  3. Step 3: Cross multiply
    268,327.07x = 402,486.49 × 68,645.76
  4. Step 4: Simplify right side
    268,327.07x = 27,628,990,824.17
  5. Step 5: Solve for x
    x = 27,628,990,824.17/268,327.07
  6. Step 6: Final answer
    x = 102,967.59

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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.