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Finding the Fourth Proportional to 331,045.08, 496,568.86 and 81,727.08

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Solution

The fourth proportional to 331,045.08, 496,568.86 and 81,727.08 is: 122,590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,045.08 : 496,568.86 = 81,727.08 : x
  2. Step 2: Convert to fraction form
    331,045.08/496,568.86 = 81,727.08/x
  3. Step 3: Cross multiply
    331,045.08x = 496,568.86 × 81,727.08
  4. Step 4: Simplify right side
    331,045.08x = 40,583,122,946.73
  5. Step 5: Solve for x
    x = 40,583,122,946.73/331,045.08
  6. Step 6: Final answer
    x = 122,590.93

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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.