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Finding the Fourth Proportional to 618,200.40, 927,062.46 and 218,766.72

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Solution

The fourth proportional to 618,200.40, 927,062.46 and 218,766.72 is: 328,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,200.40 : 927,062.46 = 218,766.72 : x
  2. Step 2: Convert to fraction form
    618,200.40/927,062.46 = 218,766.72/x
  3. Step 3: Cross multiply
    618,200.40x = 927,062.46 × 218,766.72
  4. Step 4: Simplify right side
    618,200.40x = 202,810,413,609.33
  5. Step 5: Solve for x
    x = 202,810,413,609.33/618,200.40
  6. Step 6: Final answer
    x = 328,065.81

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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.