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Finding the Fourth Proportional to 223,517.57, 308,455.86 and 121,542.89

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Solution

The fourth proportional to 223,517.57, 308,455.86 and 121,542.89 is: 167,730.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,517.57 : 308,455.86 = 121,542.89 : x
  2. Step 2: Convert to fraction form
    223,517.57/308,455.86 = 121,542.89/x
  3. Step 3: Cross multiply
    223,517.57x = 308,455.86 × 121,542.89
  4. Step 4: Simplify right side
    223,517.57x = 37,490,616,661.84
  5. Step 5: Solve for x
    x = 37,490,616,661.84/223,517.57
  6. Step 6: Final answer
    x = 167,730.07

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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.