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Finding the Fourth Proportional to 394,948.60, 592,160.34 and 217,539

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Solution

The fourth proportional to 394,948.60, 592,160.34 and 217,539 is: 326,163.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,948.60 : 592,160.34 = 217,539 : x
  2. Step 2: Convert to fraction form
    394,948.60/592,160.34 = 217,539/x
  3. Step 3: Cross multiply
    394,948.60x = 592,160.34 × 217,539
  4. Step 4: Simplify right side
    394,948.60x = 128,817,968,203.26
  5. Step 5: Solve for x
    x = 128,817,968,203.26/394,948.60
  6. Step 6: Final answer
    x = 326,163.88

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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.