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Finding the Fourth Proportional to 202,456.44, 279,377.64 and 121,910.04

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Solution

The fourth proportional to 202,456.44, 279,377.64 and 121,910.04 is: 168,228.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,456.44 : 279,377.64 = 121,910.04 : x
  2. Step 2: Convert to fraction form
    202,456.44/279,377.64 = 121,910.04/x
  3. Step 3: Cross multiply
    202,456.44x = 279,377.64 × 121,910.04
  4. Step 4: Simplify right side
    202,456.44x = 34,058,939,267.51
  5. Step 5: Solve for x
    x = 34,058,939,267.51/202,456.44
  6. Step 6: Final answer
    x = 168,228.48

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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.