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Finding the Fourth Proportional to 291,167.52, 401,808.30 and 170,285.90

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Solution

The fourth proportional to 291,167.52, 401,808.30 and 170,285.90 is: 234,992.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,167.52 : 401,808.30 = 170,285.90 : x
  2. Step 2: Convert to fraction form
    291,167.52/401,808.30 = 170,285.90/x
  3. Step 3: Cross multiply
    291,167.52x = 401,808.30 × 170,285.90
  4. Step 4: Simplify right side
    291,167.52x = 68,422,287,992.97
  5. Step 5: Solve for x
    x = 68,422,287,992.97/291,167.52
  6. Step 6: Final answer
    x = 234,992.86

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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.