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Finding the Fourth Proportional to 223,212.48, 308,035.50 and 121,238.94

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Solution

The fourth proportional to 223,212.48, 308,035.50 and 121,238.94 is: 167,310.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,212.48 : 308,035.50 = 121,238.94 : x
  2. Step 2: Convert to fraction form
    223,212.48/308,035.50 = 121,238.94/x
  3. Step 3: Cross multiply
    223,212.48x = 308,035.50 × 121,238.94
  4. Step 4: Simplify right side
    223,212.48x = 37,345,897,502.37
  5. Step 5: Solve for x
    x = 37,345,897,502.37/223,212.48
  6. Step 6: Final answer
    x = 167,310.97

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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.