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Finding the Fourth Proportional to 308,083.96, 425,175.81 and 172,118.64

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Solution

The fourth proportional to 308,083.96, 425,175.81 and 172,118.64 is: 237,534.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,083.96 : 425,175.81 = 172,118.64 : x
  2. Step 2: Convert to fraction form
    308,083.96/425,175.81 = 172,118.64/x
  3. Step 3: Cross multiply
    308,083.96x = 425,175.81 × 172,118.64
  4. Step 4: Simplify right side
    308,083.96x = 73,180,681,229.13
  5. Step 5: Solve for x
    x = 73,180,681,229.13/308,083.96
  6. Step 6: Final answer
    x = 237,534.86

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1.5x scale

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.