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Finding the Fourth Proportional to 408,220.15, 612,338.66 and 148,548.87

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Solution

The fourth proportional to 408,220.15, 612,338.66 and 148,548.87 is: 222,826.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,220.15 : 612,338.66 = 148,548.87 : x
  2. Step 2: Convert to fraction form
    408,220.15/612,338.66 = 148,548.87/x
  3. Step 3: Cross multiply
    408,220.15x = 612,338.66 × 148,548.87
  4. Step 4: Simplify right side
    408,220.15x = 90,962,215,257.57
  5. Step 5: Solve for x
    x = 90,962,215,257.57/408,220.15
  6. Step 6: Final answer
    x = 222,826.37

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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.