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Finding the Fourth Proportional to 547,335.78, 820,995.48 and 168,261.72

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Solution

The fourth proportional to 547,335.78, 820,995.48 and 168,261.72 is: 252,390.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,335.78 : 820,995.48 = 168,261.72 : x
  2. Step 2: Convert to fraction form
    547,335.78/820,995.48 = 168,261.72/x
  3. Step 3: Cross multiply
    547,335.78x = 820,995.48 × 168,261.72
  4. Step 4: Simplify right side
    547,335.78x = 138,142,111,577.03
  5. Step 5: Solve for x
    x = 138,142,111,577.03/547,335.78
  6. Step 6: Final answer
    x = 252,390.06

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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.