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Finding the Fourth Proportional to 458,660.64, 687,198.78 and 248,446.20

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Solution

The fourth proportional to 458,660.64, 687,198.78 and 248,446.20 is: 372,240.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,660.64 : 687,198.78 = 248,446.20 : x
  2. Step 2: Convert to fraction form
    458,660.64/687,198.78 = 248,446.20/x
  3. Step 3: Cross multiply
    458,660.64x = 687,198.78 × 248,446.20
  4. Step 4: Simplify right side
    458,660.64x = 170,731,925,535.64
  5. Step 5: Solve for x
    x = 170,731,925,535.64/458,660.64
  6. Step 6: Final answer
    x = 372,240.19

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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.