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Finding the Fourth Proportional to 547,872.09, 821,808.12 and 148,512.86

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Solution

The fourth proportional to 547,872.09, 821,808.12 and 148,512.86 is: 222,769.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,872.09 : 821,808.12 = 148,512.86 : x
  2. Step 2: Convert to fraction form
    547,872.09/821,808.12 = 148,512.86/x
  3. Step 3: Cross multiply
    547,872.09x = 821,808.12 × 148,512.86
  4. Step 4: Simplify right side
    547,872.09x = 122,049,070,163.38
  5. Step 5: Solve for x
    x = 122,049,070,163.38/547,872.09
  6. Step 6: Final answer
    x = 222,769.28

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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.