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Finding the Fourth Proportional to 216,310.80, 324,522.90 and 83,195.40

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Solution

The fourth proportional to 216,310.80, 324,522.90 and 83,195.40 is: 124,814.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,310.80 : 324,522.90 = 83,195.40 : x
  2. Step 2: Convert to fraction form
    216,310.80/324,522.90 = 83,195.40/x
  3. Step 3: Cross multiply
    216,310.80x = 324,522.90 × 83,195.40
  4. Step 4: Simplify right side
    216,310.80x = 26,998,812,474.66
  5. Step 5: Solve for x
    x = 26,998,812,474.66/216,310.80
  6. Step 6: Final answer
    x = 124,814.91

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1.5x scale

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.