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Finding the Fourth Proportional to 538,115.80, 807,173.70 and 164,090.20

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Solution

The fourth proportional to 538,115.80, 807,173.70 and 164,090.20 is: 246,135.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,115.80 : 807,173.70 = 164,090.20 : x
  2. Step 2: Convert to fraction form
    538,115.80/807,173.70 = 164,090.20/x
  3. Step 3: Cross multiply
    538,115.80x = 807,173.70 × 164,090.20
  4. Step 4: Simplify right side
    538,115.80x = 132,449,293,867.74
  5. Step 5: Solve for x
    x = 132,449,293,867.74/538,115.80
  6. Step 6: Final answer
    x = 246,135.30

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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.