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Finding the Fourth Proportional to 331,281.86, 496,957.25 and 91,395.77

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Solution

The fourth proportional to 331,281.86, 496,957.25 and 91,395.77 is: 137,103.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,281.86 : 496,957.25 = 91,395.77 : x
  2. Step 2: Convert to fraction form
    331,281.86/496,957.25 = 91,395.77/x
  3. Step 3: Cross multiply
    331,281.86x = 496,957.25 × 91,395.77
  4. Step 4: Simplify right side
    331,281.86x = 45,419,788,264.54
  5. Step 5: Solve for x
    x = 45,419,788,264.54/331,281.86
  6. Step 6: Final answer
    x = 137,103.16

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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.