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Finding the Fourth Proportional to 222,302.78, 306,777.84 and 121,700.78

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Solution

The fourth proportional to 222,302.78, 306,777.84 and 121,700.78 is: 167,947.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,302.78 : 306,777.84 = 121,700.78 : x
  2. Step 2: Convert to fraction form
    222,302.78/306,777.84 = 121,700.78/x
  3. Step 3: Cross multiply
    222,302.78x = 306,777.84 × 121,700.78
  4. Step 4: Simplify right side
    222,302.78x = 37,335,102,414.72
  5. Step 5: Solve for x
    x = 37,335,102,414.72/222,302.78
  6. Step 6: Final answer
    x = 167,947.08

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1.5x scale

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.