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Finding the Fourth Proportional to 299,720.92, 449,581.74 and 89,353.66

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Solution

The fourth proportional to 299,720.92, 449,581.74 and 89,353.66 is: 134,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,720.92 : 449,581.74 = 89,353.66 : x
  2. Step 2: Convert to fraction form
    299,720.92/449,581.74 = 89,353.66/x
  3. Step 3: Cross multiply
    299,720.92x = 449,581.74 × 89,353.66
  4. Step 4: Simplify right side
    299,720.92x = 40,171,773,938.17
  5. Step 5: Solve for x
    x = 40,171,773,938.17/299,720.92
  6. Step 6: Final answer
    x = 134,030.60

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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.