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Finding the Fourth Proportional to 618,114.72, 927,249.84 and 218,661.60

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Solution

The fourth proportional to 618,114.72, 927,249.84 and 218,661.60 is: 328,019.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,114.72 : 927,249.84 = 218,661.60 : x
  2. Step 2: Convert to fraction form
    618,114.72/927,249.84 = 218,661.60/x
  3. Step 3: Cross multiply
    618,114.72x = 927,249.84 × 218,661.60
  4. Step 4: Simplify right side
    618,114.72x = 202,753,933,614.14
  5. Step 5: Solve for x
    x = 202,753,933,614.14/618,114.72
  6. Step 6: Final answer
    x = 328,019.91

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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.