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Finding the Fourth Proportional to 308,181.99, 425,282.94 and 172,217.04

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Solution

The fourth proportional to 308,181.99, 425,282.94 and 172,217.04 is: 237,654.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,181.99 : 425,282.94 = 172,217.04 : x
  2. Step 2: Convert to fraction form
    308,181.99/425,282.94 = 172,217.04/x
  3. Step 3: Cross multiply
    308,181.99x = 425,282.94 × 172,217.04
  4. Step 4: Simplify right side
    308,181.99x = 73,240,969,089.30
  5. Step 5: Solve for x
    x = 73,240,969,089.30/308,181.99
  6. Step 6: Final answer
    x = 237,654.93

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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.