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Finding the Fourth Proportional to 395,426.18, 593,226.76 and 217,841.78

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Solution

The fourth proportional to 395,426.18, 593,226.76 and 217,841.78 is: 326,810.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,426.18 : 593,226.76 = 217,841.78 : x
  2. Step 2: Convert to fraction form
    395,426.18/593,226.76 = 217,841.78/x
  3. Step 3: Cross multiply
    395,426.18x = 593,226.76 × 217,841.78
  4. Step 4: Simplify right side
    395,426.18x = 129,229,573,342.03
  5. Step 5: Solve for x
    x = 129,229,573,342.03/395,426.18
  6. Step 6: Final answer
    x = 326,810.87

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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.