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Finding the Fourth Proportional to 386,118.52, 532,843.70 and 235,215.52

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Solution

The fourth proportional to 386,118.52, 532,843.70 and 235,215.52 is: 324,597.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,118.52 : 532,843.70 = 235,215.52 : x
  2. Step 2: Convert to fraction form
    386,118.52/532,843.70 = 235,215.52/x
  3. Step 3: Cross multiply
    386,118.52x = 532,843.70 × 235,215.52
  4. Step 4: Simplify right side
    386,118.52x = 125,333,107,974.22
  5. Step 5: Solve for x
    x = 125,333,107,974.22/386,118.52
  6. Step 6: Final answer
    x = 324,597.50

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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.