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Finding the Fourth Proportional to 285,067.92, 426,610.44 and 172,685.28

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Solution

The fourth proportional to 285,067.92, 426,610.44 and 172,685.28 is: 258,427.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,067.92 : 426,610.44 = 172,685.28 : x
  2. Step 2: Convert to fraction form
    285,067.92/426,610.44 = 172,685.28/x
  3. Step 3: Cross multiply
    285,067.92x = 426,610.44 × 172,685.28
  4. Step 4: Simplify right side
    285,067.92x = 73,669,343,282.32
  5. Step 5: Solve for x
    x = 73,669,343,282.32/285,067.92
  6. Step 6: Final answer
    x = 258,427.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.