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Finding the Fourth Proportional to 331,991.52, 497,987.04 and 121,645.92

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Solution

The fourth proportional to 331,991.52, 497,987.04 and 121,645.92 is: 182,468.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,991.52 : 497,987.04 = 121,645.92 : x
  2. Step 2: Convert to fraction form
    331,991.52/497,987.04 = 121,645.92/x
  3. Step 3: Cross multiply
    331,991.52x = 497,987.04 × 121,645.92
  4. Step 4: Simplify right side
    331,991.52x = 60,578,091,628.88
  5. Step 5: Solve for x
    x = 60,578,091,628.88/331,991.52
  6. Step 6: Final answer
    x = 182,468.79

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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.