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Finding the Fourth Proportional to 538,090.55, 807,182.29 and 138,727.95

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Solution

The fourth proportional to 538,090.55, 807,182.29 and 138,727.95 is: 208,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,090.55 : 807,182.29 = 138,727.95 : x
  2. Step 2: Convert to fraction form
    538,090.55/807,182.29 = 138,727.95/x
  3. Step 3: Cross multiply
    538,090.55x = 807,182.29 × 138,727.95
  4. Step 4: Simplify right side
    538,090.55x = 111,978,743,394.51
  5. Step 5: Solve for x
    x = 111,978,743,394.51/538,090.55
  6. Step 6: Final answer
    x = 208,103.90

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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.