Home / 331,084.16-496,620.48-81,766.40

Finding the Fourth Proportional to 331,084.16, 496,620.48 and 81,766.40

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Solution

The fourth proportional to 331,084.16, 496,620.48 and 81,766.40 is: 122,648.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,084.16 : 496,620.48 = 81,766.40 : x
  2. Step 2: Convert to fraction form
    331,084.16/496,620.48 = 81,766.40/x
  3. Step 3: Cross multiply
    331,084.16x = 496,620.48 × 81,766.40
  4. Step 4: Simplify right side
    331,084.16x = 40,606,868,815.87
  5. Step 5: Solve for x
    x = 40,606,868,815.87/331,084.16
  6. Step 6: Final answer
    x = 122,648.18

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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.