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Finding the Fourth Proportional to 223,967.97, 309,073.15 and 121,993.11

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Solution

The fourth proportional to 223,967.97, 309,073.15 and 121,993.11 is: 168,349.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,967.97 : 309,073.15 = 121,993.11 : x
  2. Step 2: Convert to fraction form
    223,967.97/309,073.15 = 121,993.11/x
  3. Step 3: Cross multiply
    223,967.97x = 309,073.15 × 121,993.11
  4. Step 4: Simplify right side
    223,967.97x = 37,704,794,786.00
  5. Step 5: Solve for x
    x = 37,704,794,786.00/223,967.97
  6. Step 6: Final answer
    x = 168,349.05

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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.