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Finding the Fourth Proportional to 547,725.13, 821,617.31 and 168,906.66

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Solution

The fourth proportional to 547,725.13, 821,617.31 and 168,906.66 is: 253,369.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,725.13 : 821,617.31 = 168,906.66 : x
  2. Step 2: Convert to fraction form
    547,725.13/821,617.31 = 168,906.66/x
  3. Step 3: Cross multiply
    547,725.13x = 821,617.31 × 168,906.66
  4. Step 4: Simplify right side
    547,725.13x = 138,776,635,630.29
  5. Step 5: Solve for x
    x = 138,776,635,630.29/547,725.13
  6. Step 6: Final answer
    x = 253,369.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.