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Finding the Fourth Proportional to 250,617.78, 345,820.66 and 143,194.77

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Solution

The fourth proportional to 250,617.78, 345,820.66 and 143,194.77 is: 197,590.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,617.78 : 345,820.66 = 143,194.77 : x
  2. Step 2: Convert to fraction form
    250,617.78/345,820.66 = 143,194.77/x
  3. Step 3: Cross multiply
    250,617.78x = 345,820.66 × 143,194.77
  4. Step 4: Simplify right side
    250,617.78x = 49,519,709,511.96
  5. Step 5: Solve for x
    x = 49,519,709,511.96/250,617.78
  6. Step 6: Final answer
    x = 197,590.57

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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.