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Finding the Fourth Proportional to 223,283.42, 308,134.62 and 121,310.90

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Solution

The fourth proportional to 223,283.42, 308,134.62 and 121,310.90 is: 167,410.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,283.42 : 308,134.62 = 121,310.90 : x
  2. Step 2: Convert to fraction form
    223,283.42/308,134.62 = 121,310.90/x
  3. Step 3: Cross multiply
    223,283.42x = 308,134.62 × 121,310.90
  4. Step 4: Simplify right side
    223,283.42x = 37,380,088,843.69
  5. Step 5: Solve for x
    x = 37,380,088,843.69/223,283.42
  6. Step 6: Final answer
    x = 167,410.95

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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.