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Finding the Fourth Proportional to 299,475.60, 449,213.40 and 220,743.60

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Solution

The fourth proportional to 299,475.60, 449,213.40 and 220,743.60 is: 331,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,475.60 : 449,213.40 = 220,743.60 : x
  2. Step 2: Convert to fraction form
    299,475.60/449,213.40 = 220,743.60/x
  3. Step 3: Cross multiply
    299,475.60x = 449,213.40 × 220,743.60
  4. Step 4: Simplify right side
    299,475.60x = 99,160,983,084.24
  5. Step 5: Solve for x
    x = 99,160,983,084.24/299,475.60
  6. Step 6: Final answer
    x = 331,115.40

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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.