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Finding the Fourth Proportional to 223,902.04, 308,988.86 and 121,930.52

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Solution

The fourth proportional to 223,902.04, 308,988.86 and 121,930.52 is: 168,266.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,902.04 : 308,988.86 = 121,930.52 : x
  2. Step 2: Convert to fraction form
    223,902.04/308,988.86 = 121,930.52/x
  3. Step 3: Cross multiply
    223,902.04x = 308,988.86 × 121,930.52
  4. Step 4: Simplify right side
    223,902.04x = 37,675,172,374.01
  5. Step 5: Solve for x
    x = 37,675,172,374.01/223,902.04
  6. Step 6: Final answer
    x = 168,266.32

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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.