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Finding the Fourth Proportional to 223,967.48, 309,072.47 and 121,992.62

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Solution

The fourth proportional to 223,967.48, 309,072.47 and 121,992.62 is: 168,348.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,967.48 : 309,072.47 = 121,992.62 : x
  2. Step 2: Convert to fraction form
    223,967.48/309,072.47 = 121,992.62/x
  3. Step 3: Cross multiply
    223,967.48x = 309,072.47 × 121,992.62
  4. Step 4: Simplify right side
    223,967.48x = 37,704,558,229.85
  5. Step 5: Solve for x
    x = 37,704,558,229.85/223,967.48
  6. Step 6: Final answer
    x = 168,348.37

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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.