Home / 408,921.18-613,333.08-109,424.90

Finding the Fourth Proportional to 408,921.18, 613,333.08 and 109,424.90

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Solution

The fourth proportional to 408,921.18, 613,333.08 and 109,424.90 is: 164,124.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,921.18 : 613,333.08 = 109,424.90 : x
  2. Step 2: Convert to fraction form
    408,921.18/613,333.08 = 109,424.90/x
  3. Step 3: Cross multiply
    408,921.18x = 613,333.08 × 109,424.90
  4. Step 4: Simplify right side
    408,921.18x = 67,113,910,945.69
  5. Step 5: Solve for x
    x = 67,113,910,945.69/408,921.18
  6. Step 6: Final answer
    x = 164,124.32

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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.