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Finding the Fourth Proportional to 251,178.48, 346,625.28 and 143,748

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Solution

The fourth proportional to 251,178.48, 346,625.28 and 143,748 is: 198,371.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,178.48 : 346,625.28 = 143,748 : x
  2. Step 2: Convert to fraction form
    251,178.48/346,625.28 = 143,748/x
  3. Step 3: Cross multiply
    251,178.48x = 346,625.28 × 143,748
  4. Step 4: Simplify right side
    251,178.48x = 49,826,690,749.44
  5. Step 5: Solve for x
    x = 49,826,690,749.44/251,178.48
  6. Step 6: Final answer
    x = 198,371.65

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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.