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Finding the Fourth Proportional to 538,261.59, 807,388.32 and 138,868.41

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Solution

The fourth proportional to 538,261.59, 807,388.32 and 138,868.41 is: 208,301.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,261.59 : 807,388.32 = 138,868.41 : x
  2. Step 2: Convert to fraction form
    538,261.59/807,388.32 = 138,868.41/x
  3. Step 3: Cross multiply
    538,261.59x = 807,388.32 × 138,868.41
  4. Step 4: Simplify right side
    538,261.59x = 112,120,732,250.97
  5. Step 5: Solve for x
    x = 112,120,732,250.97/538,261.59
  6. Step 6: Final answer
    x = 208,301.57

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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.