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Finding the Fourth Proportional to 324,760.71, 487,186.16 and 100,138.80

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Solution

The fourth proportional to 324,760.71, 487,186.16 and 100,138.80 is: 150,222.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,760.71 : 487,186.16 = 100,138.80 : x
  2. Step 2: Convert to fraction form
    324,760.71/487,186.16 = 100,138.80/x
  3. Step 3: Cross multiply
    324,760.71x = 487,186.16 × 100,138.80
  4. Step 4: Simplify right side
    324,760.71x = 48,786,237,689.36
  5. Step 5: Solve for x
    x = 48,786,237,689.36/324,760.71
  6. Step 6: Final answer
    x = 150,222.11

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1.5x scale

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.