Home / 308,664.09-425,972.94-172,689.90

Finding the Fourth Proportional to 308,664.09, 425,972.94 and 172,689.90

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Solution

The fourth proportional to 308,664.09, 425,972.94 and 172,689.90 is: 238,321.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,664.09 : 425,972.94 = 172,689.90 : x
  2. Step 2: Convert to fraction form
    308,664.09/425,972.94 = 172,689.90/x
  3. Step 3: Cross multiply
    308,664.09x = 425,972.94 × 172,689.90
  4. Step 4: Simplify right side
    308,664.09x = 73,561,224,411.31
  5. Step 5: Solve for x
    x = 73,561,224,411.31/308,664.09
  6. Step 6: Final answer
    x = 238,321.29

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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.