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Finding the Fourth Proportional to 308,862.44, 426,230.34 and 172,896.65

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Solution

The fourth proportional to 308,862.44, 426,230.34 and 172,896.65 is: 238,597.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,862.44 : 426,230.34 = 172,896.65 : x
  2. Step 2: Convert to fraction form
    308,862.44/426,230.34 = 172,896.65/x
  3. Step 3: Cross multiply
    308,862.44x = 426,230.34 × 172,896.65
  4. Step 4: Simplify right side
    308,862.44x = 73,693,798,979.94
  5. Step 5: Solve for x
    x = 73,693,798,979.94/308,862.44
  6. Step 6: Final answer
    x = 238,597.48

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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.