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Finding the Fourth Proportional to 202,555.80, 279,543.33 and 111,919.68

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Solution

The fourth proportional to 202,555.80, 279,543.33 and 111,919.68 is: 154,458.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,555.80 : 279,543.33 = 111,919.68 : x
  2. Step 2: Convert to fraction form
    202,555.80/279,543.33 = 111,919.68/x
  3. Step 3: Cross multiply
    202,555.80x = 279,543.33 × 111,919.68
  4. Step 4: Simplify right side
    202,555.80x = 31,286,400,039.73
  5. Step 5: Solve for x
    x = 31,286,400,039.73/202,555.80
  6. Step 6: Final answer
    x = 154,458.18

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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.