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Finding the Fourth Proportional to 324,145.38, 486,218.16 and 87,488.04

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Solution

The fourth proportional to 324,145.38, 486,218.16 and 87,488.04 is: 131,232.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,145.38 : 486,218.16 = 87,488.04 : x
  2. Step 2: Convert to fraction form
    324,145.38/486,218.16 = 87,488.04/x
  3. Step 3: Cross multiply
    324,145.38x = 486,218.16 × 87,488.04
  4. Step 4: Simplify right side
    324,145.38x = 42,538,273,830.81
  5. Step 5: Solve for x
    x = 42,538,273,830.81/324,145.38
  6. Step 6: Final answer
    x = 131,232.08

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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.