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Finding the Fourth Proportional to 202,264.79, 279,143.30 and 111,640.37

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Solution

The fourth proportional to 202,264.79, 279,143.30 and 111,640.37 is: 154,073.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,264.79 : 279,143.30 = 111,640.37 : x
  2. Step 2: Convert to fraction form
    202,264.79/279,143.30 = 111,640.37/x
  3. Step 3: Cross multiply
    202,264.79x = 279,143.30 × 111,640.37
  4. Step 4: Simplify right side
    202,264.79x = 31,163,660,736.82
  5. Step 5: Solve for x
    x = 31,163,660,736.82/202,264.79
  6. Step 6: Final answer
    x = 154,073.58

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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.