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Finding the Fourth Proportional to 223,350.78, 308,227.08 and 121,378.26

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Solution

The fourth proportional to 223,350.78, 308,227.08 and 121,378.26 is: 167,503.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,350.78 : 308,227.08 = 121,378.26 : x
  2. Step 2: Convert to fraction form
    223,350.78/308,227.08 = 121,378.26/x
  3. Step 3: Cross multiply
    223,350.78x = 308,227.08 × 121,378.26
  4. Step 4: Simplify right side
    223,350.78x = 37,412,068,266.30
  5. Step 5: Solve for x
    x = 37,412,068,266.30/223,350.78
  6. Step 6: Final answer
    x = 167,503.64

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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.