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Finding the Fourth Proportional to 324,296.64, 486,455.90 and 87,641.37

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Solution

The fourth proportional to 324,296.64, 486,455.90 and 87,641.37 is: 131,465.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,296.64 : 486,455.90 = 87,641.37 : x
  2. Step 2: Convert to fraction form
    324,296.64/486,455.90 = 87,641.37/x
  3. Step 3: Cross multiply
    324,296.64x = 486,455.90 × 87,641.37
  4. Step 4: Simplify right side
    324,296.64x = 42,633,661,082.38
  5. Step 5: Solve for x
    x = 42,633,661,082.38/324,296.64
  6. Step 6: Final answer
    x = 131,465.01

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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.