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Finding the Fourth Proportional to 268,332.80, 402,496.38 and 68,651.60

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Solution

The fourth proportional to 268,332.80, 402,496.38 and 68,651.60 is: 102,976.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,332.80 : 402,496.38 = 68,651.60 : x
  2. Step 2: Convert to fraction form
    268,332.80/402,496.38 = 68,651.60/x
  3. Step 3: Cross multiply
    268,332.80x = 402,496.38 × 68,651.60
  4. Step 4: Simplify right side
    268,332.80x = 27,632,018,468.73
  5. Step 5: Solve for x
    x = 27,632,018,468.73/268,332.80
  6. Step 6: Final answer
    x = 102,976.67

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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.