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Finding the Fourth Proportional to 223,335.68, 308,205.16 and 121,361.12

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Solution

The fourth proportional to 223,335.68, 308,205.16 and 121,361.12 is: 167,479.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,335.68 : 308,205.16 = 121,361.12 : x
  2. Step 2: Convert to fraction form
    223,335.68/308,205.16 = 121,361.12/x
  3. Step 3: Cross multiply
    223,335.68x = 308,205.16 × 121,361.12
  4. Step 4: Simplify right side
    223,335.68x = 37,404,123,407.38
  5. Step 5: Solve for x
    x = 37,404,123,407.38/223,335.68
  6. Step 6: Final answer
    x = 167,479.39

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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.