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Finding the Fourth Proportional to 223,117.88, 307,902.49 and 122,515.88

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Solution

The fourth proportional to 223,117.88, 307,902.49 and 122,515.88 is: 169,071.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,117.88 : 307,902.49 = 122,515.88 : x
  2. Step 2: Convert to fraction form
    223,117.88/307,902.49 = 122,515.88/x
  3. Step 3: Cross multiply
    223,117.88x = 307,902.49 × 122,515.88
  4. Step 4: Simplify right side
    223,117.88x = 37,722,944,980.01
  5. Step 5: Solve for x
    x = 37,722,944,980.01/223,117.88
  6. Step 6: Final answer
    x = 169,071.81

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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.