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Finding the Fourth Proportional to 223,375.80, 308,258.61 and 121,401.51

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Solution

The fourth proportional to 223,375.80, 308,258.61 and 121,401.51 is: 167,534.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,375.80 : 308,258.61 = 121,401.51 : x
  2. Step 2: Convert to fraction form
    223,375.80/308,258.61 = 121,401.51/x
  3. Step 3: Cross multiply
    223,375.80x = 308,258.61 × 121,401.51
  4. Step 4: Simplify right side
    223,375.80x = 37,423,060,663.14
  5. Step 5: Solve for x
    x = 37,423,060,663.14/223,375.80
  6. Step 6: Final answer
    x = 167,534.09

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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.