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Finding the Fourth Proportional to 223,892.04, 308,975.06 and 121,920.52

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Solution

The fourth proportional to 223,892.04, 308,975.06 and 121,920.52 is: 168,252.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,892.04 : 308,975.06 = 121,920.52 : x
  2. Step 2: Convert to fraction form
    223,892.04/308,975.06 = 121,920.52/x
  3. Step 3: Cross multiply
    223,892.04x = 308,975.06 × 121,920.52
  4. Step 4: Simplify right side
    223,892.04x = 37,670,399,982.23
  5. Step 5: Solve for x
    x = 37,670,399,982.23/223,892.04
  6. Step 6: Final answer
    x = 168,252.52

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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.