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Finding the Fourth Proportional to 279,015.01, 384,357.38 and 202,308.71

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Solution

The fourth proportional to 279,015.01, 384,357.38 and 202,308.71 is: 278,690.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,015.01 : 384,357.38 = 202,308.71 : x
  2. Step 2: Convert to fraction form
    279,015.01/384,357.38 = 202,308.71/x
  3. Step 3: Cross multiply
    279,015.01x = 384,357.38 × 202,308.71
  4. Step 4: Simplify right side
    279,015.01x = 77,758,845,726.78
  5. Step 5: Solve for x
    x = 77,758,845,726.78/279,015.01
  6. Step 6: Final answer
    x = 278,690.55

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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.