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Finding the Fourth Proportional to 268,216.55, 402,323.68 and 68,536.61

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Solution

The fourth proportional to 268,216.55, 402,323.68 and 68,536.61 is: 102,804.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,216.55 : 402,323.68 = 68,536.61 : x
  2. Step 2: Convert to fraction form
    268,216.55/402,323.68 = 68,536.61/x
  3. Step 3: Cross multiply
    268,216.55x = 402,323.68 × 68,536.61
  4. Step 4: Simplify right side
    268,216.55x = 27,573,901,984.39
  5. Step 5: Solve for x
    x = 27,573,901,984.39/268,216.55
  6. Step 6: Final answer
    x = 102,804.63

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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.