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Finding the Fourth Proportional to 279,067.64, 385,111.44 and 151,743.32

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Solution

The fourth proportional to 279,067.64, 385,111.44 and 151,743.32 is: 209,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,067.64 : 385,111.44 = 151,743.32 : x
  2. Step 2: Convert to fraction form
    279,067.64/385,111.44 = 151,743.32/x
  3. Step 3: Cross multiply
    279,067.64x = 385,111.44 × 151,743.32
  4. Step 4: Simplify right side
    279,067.64x = 58,438,088,475.58
  5. Step 5: Solve for x
    x = 58,438,088,475.58/279,067.64
  6. Step 6: Final answer
    x = 209,404.75

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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.