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Finding the Fourth Proportional to 331,054.61, 496,587.68 and 91,167.28

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Solution

The fourth proportional to 331,054.61, 496,587.68 and 91,167.28 is: 136,752.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,054.61 : 496,587.68 = 91,167.28 : x
  2. Step 2: Convert to fraction form
    331,054.61/496,587.68 = 91,167.28/x
  3. Step 3: Cross multiply
    331,054.61x = 496,587.68 × 91,167.28
  4. Step 4: Simplify right side
    331,054.61x = 45,272,548,067.11
  5. Step 5: Solve for x
    x = 45,272,548,067.11/331,054.61
  6. Step 6: Final answer
    x = 136,752.51

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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.