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Finding the Fourth Proportional to 324,731, 486,668.82 and 137,510.84

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Solution

The fourth proportional to 324,731, 486,668.82 and 137,510.84 is: 206,085.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,731 : 486,668.82 = 137,510.84 : x
  2. Step 2: Convert to fraction form
    324,731/486,668.82 = 137,510.84/x
  3. Step 3: Cross multiply
    324,731x = 486,668.82 × 137,510.84
  4. Step 4: Simplify right side
    324,731x = 66,922,238,240.01
  5. Step 5: Solve for x
    x = 66,922,238,240.01/324,731
  6. Step 6: Final answer
    x = 206,085.15

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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.