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Finding the Fourth Proportional to 422,519.28, 583,131.96 and 272,053.68

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Solution

The fourth proportional to 422,519.28, 583,131.96 and 272,053.68 is: 375,469.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,519.28 : 583,131.96 = 272,053.68 : x
  2. Step 2: Convert to fraction form
    422,519.28/583,131.96 = 272,053.68/x
  3. Step 3: Cross multiply
    422,519.28x = 583,131.96 × 272,053.68
  4. Step 4: Simplify right side
    422,519.28x = 158,643,195,643.61
  5. Step 5: Solve for x
    x = 158,643,195,643.61/422,519.28
  6. Step 6: Final answer
    x = 375,469.72

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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.