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Finding the Fourth Proportional to 299,956.20, 449,984.70 and 89,615.40

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Solution

The fourth proportional to 299,956.20, 449,984.70 and 89,615.40 is: 134,438.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,956.20 : 449,984.70 = 89,615.40 : x
  2. Step 2: Convert to fraction form
    299,956.20/449,984.70 = 89,615.40/x
  3. Step 3: Cross multiply
    299,956.20x = 449,984.70 × 89,615.40
  4. Step 4: Simplify right side
    299,956.20x = 40,325,558,884.38
  5. Step 5: Solve for x
    x = 40,325,558,884.38/299,956.20
  6. Step 6: Final answer
    x = 134,438.16

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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.