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Finding the Fourth Proportional to 419,550.75, 578,959.79 and 238,238.73

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Solution

The fourth proportional to 419,550.75, 578,959.79 and 238,238.73 is: 328,757.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,550.75 : 578,959.79 = 238,238.73 : x
  2. Step 2: Convert to fraction form
    419,550.75/578,959.79 = 238,238.73/x
  3. Step 3: Cross multiply
    419,550.75x = 578,959.79 × 238,238.73
  4. Step 4: Simplify right side
    419,550.75x = 137,930,643,899.47
  5. Step 5: Solve for x
    x = 137,930,643,899.47/419,550.75
  6. Step 6: Final answer
    x = 328,757.95

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1.5x scale

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.