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Finding the Fourth Proportional to 224,086.80, 336,065.40 and 81,915.60

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Solution

The fourth proportional to 224,086.80, 336,065.40 and 81,915.60 is: 122,849.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,086.80 : 336,065.40 = 81,915.60 : x
  2. Step 2: Convert to fraction form
    224,086.80/336,065.40 = 81,915.60/x
  3. Step 3: Cross multiply
    224,086.80x = 336,065.40 × 81,915.60
  4. Step 4: Simplify right side
    224,086.80x = 27,528,998,880.24
  5. Step 5: Solve for x
    x = 27,528,998,880.24/224,086.80
  6. Step 6: Final answer
    x = 122,849.71

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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.