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Finding the Fourth Proportional to 324,299.64, 486,460.40 and 87,644.38

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Solution

The fourth proportional to 324,299.64, 486,460.40 and 87,644.38 is: 131,469.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,299.64 : 486,460.40 = 87,644.38 : x
  2. Step 2: Convert to fraction form
    324,299.64/486,460.40 = 87,644.38/x
  3. Step 3: Cross multiply
    324,299.64x = 486,460.40 × 87,644.38
  4. Step 4: Simplify right side
    324,299.64x = 42,635,520,152.55
  5. Step 5: Solve for x
    x = 42,635,520,152.55/324,299.64
  6. Step 6: Final answer
    x = 131,469.53

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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.