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Finding the Fourth Proportional to 618,134.20, 927,305.98 and 213,216.48

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Solution

The fourth proportional to 618,134.20, 927,305.98 and 213,216.48 is: 319,860.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,134.20 : 927,305.98 = 213,216.48 : x
  2. Step 2: Convert to fraction form
    618,134.20/927,305.98 = 213,216.48/x
  3. Step 3: Cross multiply
    618,134.20x = 927,305.98 × 213,216.48
  4. Step 4: Simplify right side
    618,134.20x = 197,716,916,938.55
  5. Step 5: Solve for x
    x = 197,716,916,938.55/618,134.20
  6. Step 6: Final answer
    x = 319,860.83

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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.