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Finding the Fourth Proportional to 223,331, 308,196.80 and 122,729

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Solution

The fourth proportional to 223,331, 308,196.80 and 122,729 is: 169,366.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,331 : 308,196.80 = 122,729 : x
  2. Step 2: Convert to fraction form
    223,331/308,196.80 = 122,729/x
  3. Step 3: Cross multiply
    223,331x = 308,196.80 × 122,729
  4. Step 4: Simplify right side
    223,331x = 37,824,685,067.20
  5. Step 5: Solve for x
    x = 37,824,685,067.20/223,331
  6. Step 6: Final answer
    x = 169,366.03

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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.