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Finding the Fourth Proportional to 400,716.52, 552,950.50 and 239,539.56

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Solution

The fourth proportional to 400,716.52, 552,950.50 and 239,539.56 is: 330,541.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,716.52 : 552,950.50 = 239,539.56 : x
  2. Step 2: Convert to fraction form
    400,716.52/552,950.50 = 239,539.56/x
  3. Step 3: Cross multiply
    400,716.52x = 552,950.50 × 239,539.56
  4. Step 4: Simplify right side
    400,716.52x = 132,453,519,471.78
  5. Step 5: Solve for x
    x = 132,453,519,471.78/400,716.52
  6. Step 6: Final answer
    x = 330,541.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.