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Finding the Fourth Proportional to 251,185.92, 346,616.46 and 143,731.32

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Solution

The fourth proportional to 251,185.92, 346,616.46 and 143,731.32 is: 198,337.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,185.92 : 346,616.46 = 143,731.32 : x
  2. Step 2: Convert to fraction form
    251,185.92/346,616.46 = 143,731.32/x
  3. Step 3: Cross multiply
    251,185.92x = 346,616.46 × 143,731.32
  4. Step 4: Simplify right side
    251,185.92x = 49,819,641,329.53
  5. Step 5: Solve for x
    x = 49,819,641,329.53/251,185.92
  6. Step 6: Final answer
    x = 198,337.71

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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.