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Finding the Fourth Proportional to 395,697.30, 593,801.10 and 218,331.60

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Solution

The fourth proportional to 395,697.30, 593,801.10 and 218,331.60 is: 327,638.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,697.30 : 593,801.10 = 218,331.60 : x
  2. Step 2: Convert to fraction form
    395,697.30/593,801.10 = 218,331.60/x
  3. Step 3: Cross multiply
    395,697.30x = 593,801.10 × 218,331.60
  4. Step 4: Simplify right side
    395,697.30x = 129,645,544,244.76
  5. Step 5: Solve for x
    x = 129,645,544,244.76/395,697.30
  6. Step 6: Final answer
    x = 327,638.18

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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.