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Finding the Fourth Proportional to 202,487.68, 279,431.70 and 111,849.52

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Solution

The fourth proportional to 202,487.68, 279,431.70 and 111,849.52 is: 154,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,487.68 : 279,431.70 = 111,849.52 : x
  2. Step 2: Convert to fraction form
    202,487.68/279,431.70 = 111,849.52/x
  3. Step 3: Cross multiply
    202,487.68x = 279,431.70 × 111,849.52
  4. Step 4: Simplify right side
    202,487.68x = 31,254,301,517.78
  5. Step 5: Solve for x
    x = 31,254,301,517.78/202,487.68
  6. Step 6: Final answer
    x = 154,351.62

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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.