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Finding the Fourth Proportional to 308,083.20, 425,149.99 and 172,119.03

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Solution

The fourth proportional to 308,083.20, 425,149.99 and 172,119.03 is: 237,521.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,083.20 : 425,149.99 = 172,119.03 : x
  2. Step 2: Convert to fraction form
    308,083.20/425,149.99 = 172,119.03/x
  3. Step 3: Cross multiply
    308,083.20x = 425,149.99 × 172,119.03
  4. Step 4: Simplify right side
    308,083.20x = 73,176,403,883.31
  5. Step 5: Solve for x
    x = 73,176,403,883.31/308,083.20
  6. Step 6: Final answer
    x = 237,521.57

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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.