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Finding the Fourth Proportional to 422,755.88, 583,709.29 and 272,115.32

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Solution

The fourth proportional to 422,755.88, 583,709.29 and 272,115.32 is: 375,716.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,755.88 : 583,709.29 = 272,115.32 : x
  2. Step 2: Convert to fraction form
    422,755.88/583,709.29 = 272,115.32/x
  3. Step 3: Cross multiply
    422,755.88x = 583,709.29 × 272,115.32
  4. Step 4: Simplify right side
    422,755.88x = 158,836,236,636.49
  5. Step 5: Solve for x
    x = 158,836,236,636.49/422,755.88
  6. Step 6: Final answer
    x = 375,716.21

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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.