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Finding the Fourth Proportional to 251,186.48, 346,636.32 and 143,756

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Solution

The fourth proportional to 251,186.48, 346,636.32 and 143,756 is: 198,382.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,186.48 : 346,636.32 = 143,756 : x
  2. Step 2: Convert to fraction form
    251,186.48/346,636.32 = 143,756/x
  3. Step 3: Cross multiply
    251,186.48x = 346,636.32 × 143,756
  4. Step 4: Simplify right side
    251,186.48x = 49,831,050,817.92
  5. Step 5: Solve for x
    x = 49,831,050,817.92/251,186.48
  6. Step 6: Final answer
    x = 198,382.69

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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.