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Finding the Fourth Proportional to 251,954.92, 347,670.66 and 138,770.92

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Solution

The fourth proportional to 251,954.92, 347,670.66 and 138,770.92 is: 191,488.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,954.92 : 347,670.66 = 138,770.92 : x
  2. Step 2: Convert to fraction form
    251,954.92/347,670.66 = 138,770.92/x
  3. Step 3: Cross multiply
    251,954.92x = 347,670.66 × 138,770.92
  4. Step 4: Simplify right side
    251,954.92x = 48,246,577,345.21
  5. Step 5: Solve for x
    x = 48,246,577,345.21/251,954.92
  6. Step 6: Final answer
    x = 191,488.93

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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.