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Finding the Fourth Proportional to 202,487.66, 279,435.65 and 111,843.39

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Solution

The fourth proportional to 202,487.66, 279,435.65 and 111,843.39 is: 154,345.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,487.66 : 279,435.65 = 111,843.39 : x
  2. Step 2: Convert to fraction form
    202,487.66/279,435.65 = 111,843.39/x
  3. Step 3: Cross multiply
    202,487.66x = 279,435.65 × 111,843.39
  4. Step 4: Simplify right side
    202,487.66x = 31,253,029,823.64
  5. Step 5: Solve for x
    x = 31,253,029,823.64/202,487.66
  6. Step 6: Final answer
    x = 154,345.36

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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.