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Finding the Fourth Proportional to 223,457.46, 308,377.37 and 121,489.78

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Solution

The fourth proportional to 223,457.46, 308,377.37 and 121,489.78 is: 167,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,457.46 : 308,377.37 = 121,489.78 : x
  2. Step 2: Convert to fraction form
    223,457.46/308,377.37 = 121,489.78/x
  3. Step 3: Cross multiply
    223,457.46x = 308,377.37 × 121,489.78
  4. Step 4: Simplify right side
    223,457.46x = 37,464,698,371.06
  5. Step 5: Solve for x
    x = 37,464,698,371.06/223,457.46
  6. Step 6: Final answer
    x = 167,659.20

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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.