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Finding the Fourth Proportional to 386,063.28, 532,766.97 and 216,298.62

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Solution

The fourth proportional to 386,063.28, 532,766.97 and 216,298.62 is: 298,491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,063.28 : 532,766.97 = 216,298.62 : x
  2. Step 2: Convert to fraction form
    386,063.28/532,766.97 = 216,298.62/x
  3. Step 3: Cross multiply
    386,063.28x = 532,766.97 × 216,298.62
  4. Step 4: Simplify right side
    386,063.28x = 115,236,760,392.58
  5. Step 5: Solve for x
    x = 115,236,760,392.58/386,063.28
  6. Step 6: Final answer
    x = 298,491.90

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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.