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Finding the Fourth Proportional to 202,656.73, 279,521.22 and 142,240.87

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Solution

The fourth proportional to 202,656.73, 279,521.22 and 142,240.87 is: 196,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,656.73 : 279,521.22 = 142,240.87 : x
  2. Step 2: Convert to fraction form
    202,656.73/279,521.22 = 142,240.87/x
  3. Step 3: Cross multiply
    202,656.73x = 279,521.22 × 142,240.87
  4. Step 4: Simplify right side
    202,656.73x = 39,759,341,516.26
  5. Step 5: Solve for x
    x = 39,759,341,516.26/202,656.73
  6. Step 6: Final answer
    x = 196,190.58

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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.