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Finding the Fourth Proportional to 268,333.11, 402,495.45 and 68,651.76

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Solution

The fourth proportional to 268,333.11, 402,495.45 and 68,651.76 is: 102,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,333.11 : 402,495.45 = 68,651.76 : x
  2. Step 2: Convert to fraction form
    268,333.11/402,495.45 = 68,651.76/x
  3. Step 3: Cross multiply
    268,333.11x = 402,495.45 × 68,651.76
  4. Step 4: Simplify right side
    268,333.11x = 27,632,021,034.49
  5. Step 5: Solve for x
    x = 27,632,021,034.49/268,333.11
  6. Step 6: Final answer
    x = 102,976.56

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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.