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Finding the Fourth Proportional to 223,552.69, 308,504.79 and 121,579.11

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Solution

The fourth proportional to 223,552.69, 308,504.79 and 121,579.11 is: 167,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,552.69 : 308,504.79 = 121,579.11 : x
  2. Step 2: Convert to fraction form
    223,552.69/308,504.79 = 121,579.11/x
  3. Step 3: Cross multiply
    223,552.69x = 308,504.79 × 121,579.11
  4. Step 4: Simplify right side
    223,552.69x = 37,507,737,798.94
  5. Step 5: Solve for x
    x = 37,507,737,798.94/223,552.69
  6. Step 6: Final answer
    x = 167,780.30

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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.