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Finding the Fourth Proportional to 257,365.31, 386,109.11 and 88,887.03

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Solution

The fourth proportional to 257,365.31, 386,109.11 and 88,887.03 is: 133,351.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,365.31 : 386,109.11 = 88,887.03 : x
  2. Step 2: Convert to fraction form
    257,365.31/386,109.11 = 88,887.03/x
  3. Step 3: Cross multiply
    257,365.31x = 386,109.11 × 88,887.03
  4. Step 4: Simplify right side
    257,365.31x = 34,320,092,043.84
  5. Step 5: Solve for x
    x = 34,320,092,043.84/257,365.31
  6. Step 6: Final answer
    x = 133,351.66

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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.