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Finding the Fourth Proportional to 324,421.20, 486,325.53 and 156,036.78

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Solution

The fourth proportional to 324,421.20, 486,325.53 and 156,036.78 is: 233,907.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,421.20 : 486,325.53 = 156,036.78 : x
  2. Step 2: Convert to fraction form
    324,421.20/486,325.53 = 156,036.78/x
  3. Step 3: Cross multiply
    324,421.20x = 486,325.53 × 156,036.78
  4. Step 4: Simplify right side
    324,421.20x = 75,884,669,732.99
  5. Step 5: Solve for x
    x = 75,884,669,732.99/324,421.20
  6. Step 6: Final answer
    x = 233,907.86

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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.