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Finding the Fourth Proportional to 324,544.72, 486,872.43 and 144,695.40

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Solution

The fourth proportional to 324,544.72, 486,872.43 and 144,695.40 is: 217,067.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,544.72 : 486,872.43 = 144,695.40 : x
  2. Step 2: Convert to fraction form
    324,544.72/486,872.43 = 144,695.40/x
  3. Step 3: Cross multiply
    324,544.72x = 486,872.43 × 144,695.40
  4. Step 4: Simplify right side
    324,544.72x = 70,448,201,007.82
  5. Step 5: Solve for x
    x = 70,448,201,007.82/324,544.72
  6. Step 6: Final answer
    x = 217,067.78

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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.