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Finding the Fourth Proportional to 408,983.20, 613,561.20 and 124,650.40

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Solution

The fourth proportional to 408,983.20, 613,561.20 and 124,650.40 is: 187,001.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,983.20 : 613,561.20 = 124,650.40 : x
  2. Step 2: Convert to fraction form
    408,983.20/613,561.20 = 124,650.40/x
  3. Step 3: Cross multiply
    408,983.20x = 613,561.20 × 124,650.40
  4. Step 4: Simplify right side
    408,983.20x = 76,480,649,004.48
  5. Step 5: Solve for x
    x = 76,480,649,004.48/408,983.20
  6. Step 6: Final answer
    x = 187,001.93

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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.