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Finding the Fourth Proportional to 251,385.92, 346,814.42 and 143,898.51

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Solution

The fourth proportional to 251,385.92, 346,814.42 and 143,898.51 is: 198,523.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,385.92 : 346,814.42 = 143,898.51 : x
  2. Step 2: Convert to fraction form
    251,385.92/346,814.42 = 143,898.51/x
  3. Step 3: Cross multiply
    251,385.92x = 346,814.42 × 143,898.51
  4. Step 4: Simplify right side
    251,385.92x = 49,906,077,565.02
  5. Step 5: Solve for x
    x = 49,906,077,565.02/251,385.92
  6. Step 6: Final answer
    x = 198,523.76

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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.