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Finding the Fourth Proportional to 222,991.11, 307,748.88 and 127,479.15

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Solution

The fourth proportional to 222,991.11, 307,748.88 and 127,479.15 is: 175,933.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,991.11 : 307,748.88 = 127,479.15 : x
  2. Step 2: Convert to fraction form
    222,991.11/307,748.88 = 127,479.15/x
  3. Step 3: Cross multiply
    222,991.11x = 307,748.88 × 127,479.15
  4. Step 4: Simplify right side
    222,991.11x = 39,231,565,635.85
  5. Step 5: Solve for x
    x = 39,231,565,635.85/222,991.11
  6. Step 6: Final answer
    x = 175,933.32

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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.