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Finding the Fourth Proportional to 547,727.13, 821,620.31 and 168,908.66

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Solution

The fourth proportional to 547,727.13, 821,620.31 and 168,908.66 is: 253,372.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,727.13 : 821,620.31 = 168,908.66 : x
  2. Step 2: Convert to fraction form
    547,727.13/821,620.31 = 168,908.66/x
  3. Step 3: Cross multiply
    547,727.13x = 821,620.31 × 168,908.66
  4. Step 4: Simplify right side
    547,727.13x = 138,778,785,590.89
  5. Step 5: Solve for x
    x = 138,778,785,590.89/547,727.13
  6. Step 6: Final answer
    x = 253,372.12

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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.