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Finding the Fourth Proportional to 251,953.67, 347,696.01 and 138,776.42

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Solution

The fourth proportional to 251,953.67, 347,696.01 and 138,776.42 is: 191,511.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,953.67 : 347,696.01 = 138,776.42 : x
  2. Step 2: Convert to fraction form
    251,953.67/347,696.01 = 138,776.42/x
  3. Step 3: Cross multiply
    251,953.67x = 347,696.01 × 138,776.42
  4. Step 4: Simplify right side
    251,953.67x = 48,252,008,385.32
  5. Step 5: Solve for x
    x = 48,252,008,385.32/251,953.67
  6. Step 6: Final answer
    x = 191,511.43

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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.