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Finding the Fourth Proportional to 363,891.15, 502,109.96 and 202,709.79

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Solution

The fourth proportional to 363,891.15, 502,109.96 and 202,709.79 is: 279,706.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,891.15 : 502,109.96 = 202,709.79 : x
  2. Step 2: Convert to fraction form
    363,891.15/502,109.96 = 202,709.79/x
  3. Step 3: Cross multiply
    363,891.15x = 502,109.96 × 202,709.79
  4. Step 4: Simplify right side
    363,891.15x = 101,782,603,534.96
  5. Step 5: Solve for x
    x = 101,782,603,534.96/363,891.15
  6. Step 6: Final answer
    x = 279,706.18

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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.