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Finding the Fourth Proportional to 324,008.40, 485,793.90 and 172,230.60

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Solution

The fourth proportional to 324,008.40, 485,793.90 and 172,230.60 is: 258,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,008.40 : 485,793.90 = 172,230.60 : x
  2. Step 2: Convert to fraction form
    324,008.40/485,793.90 = 172,230.60/x
  3. Step 3: Cross multiply
    324,008.40x = 485,793.90 × 172,230.60
  4. Step 4: Simplify right side
    324,008.40x = 83,668,574,873.34
  5. Step 5: Solve for x
    x = 83,668,574,873.34/324,008.40
  6. Step 6: Final answer
    x = 258,229.65

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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.