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Finding the Fourth Proportional to 223,628.73, 308,609.01 and 121,655.13

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Solution

The fourth proportional to 223,628.73, 308,609.01 and 121,655.13 is: 167,884.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,628.73 : 308,609.01 = 121,655.13 : x
  2. Step 2: Convert to fraction form
    223,628.73/308,609.01 = 121,655.13/x
  3. Step 3: Cross multiply
    223,628.73x = 308,609.01 × 121,655.13
  4. Step 4: Simplify right side
    223,628.73x = 37,543,869,230.72
  5. Step 5: Solve for x
    x = 37,543,869,230.72/223,628.73
  6. Step 6: Final answer
    x = 167,884.82

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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.