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Finding the Fourth Proportional to 202,456.76, 279,382.79 and 111,810.78

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Solution

The fourth proportional to 202,456.76, 279,382.79 and 111,810.78 is: 154,294.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,456.76 : 279,382.79 = 111,810.78 : x
  2. Step 2: Convert to fraction form
    202,456.76/279,382.79 = 111,810.78/x
  3. Step 3: Cross multiply
    202,456.76x = 279,382.79 × 111,810.78
  4. Step 4: Simplify right side
    202,456.76x = 31,238,007,820.14
  5. Step 5: Solve for x
    x = 31,238,007,820.14/202,456.76
  6. Step 6: Final answer
    x = 154,294.71

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1.5x scale

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.