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Finding the Fourth Proportional to 236,605.39, 326,520.39 and 129,179.95

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Solution

The fourth proportional to 236,605.39, 326,520.39 and 129,179.95 is: 178,271.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,605.39 : 326,520.39 = 129,179.95 : x
  2. Step 2: Convert to fraction form
    236,605.39/326,520.39 = 129,179.95/x
  3. Step 3: Cross multiply
    236,605.39x = 326,520.39 × 129,179.95
  4. Step 4: Simplify right side
    236,605.39x = 42,179,887,654.18
  5. Step 5: Solve for x
    x = 42,179,887,654.18/236,605.39
  6. Step 6: Final answer
    x = 178,271.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.