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Finding the Fourth Proportional to 250,506.05, 345,691.19 and 143,073.86

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Solution

The fourth proportional to 250,506.05, 345,691.19 and 143,073.86 is: 197,437.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,506.05 : 345,691.19 = 143,073.86 : x
  2. Step 2: Convert to fraction form
    250,506.05/345,691.19 = 143,073.86/x
  3. Step 3: Cross multiply
    250,506.05x = 345,691.19 × 143,073.86
  4. Step 4: Simplify right side
    250,506.05x = 49,459,371,550.52
  5. Step 5: Solve for x
    x = 49,459,371,550.52/250,506.05
  6. Step 6: Final answer
    x = 197,437.84

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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.