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Finding the Fourth Proportional to 618,226.38, 927,402.50 and 213,365.90

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Solution

The fourth proportional to 618,226.38, 927,402.50 and 213,365.90 is: 320,070.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,226.38 : 927,402.50 = 213,365.90 : x
  2. Step 2: Convert to fraction form
    618,226.38/927,402.50 = 213,365.90/x
  3. Step 3: Cross multiply
    618,226.38x = 927,402.50 × 213,365.90
  4. Step 4: Simplify right side
    618,226.38x = 197,876,069,074.75
  5. Step 5: Solve for x
    x = 197,876,069,074.75/618,226.38
  6. Step 6: Final answer
    x = 320,070.57

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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.