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Finding the Fourth Proportional to 268,329.70, 402,508.32 and 68,651.81

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Solution

The fourth proportional to 268,329.70, 402,508.32 and 68,651.81 is: 102,981.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,329.70 : 402,508.32 = 68,651.81 : x
  2. Step 2: Convert to fraction form
    268,329.70/402,508.32 = 68,651.81/x
  3. Step 3: Cross multiply
    268,329.70x = 402,508.32 × 68,651.81
  4. Step 4: Simplify right side
    268,329.70x = 27,632,924,708.06
  5. Step 5: Solve for x
    x = 27,632,924,708.06/268,329.70
  6. Step 6: Final answer
    x = 102,981.24

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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.