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Finding the Fourth Proportional to 299,487.95, 449,230.10 and 74,847.20

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Solution

The fourth proportional to 299,487.95, 449,230.10 and 74,847.20 is: 112,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,487.95 : 449,230.10 = 74,847.20 : x
  2. Step 2: Convert to fraction form
    299,487.95/449,230.10 = 74,847.20/x
  3. Step 3: Cross multiply
    299,487.95x = 449,230.10 × 74,847.20
  4. Step 4: Simplify right side
    299,487.95x = 33,623,615,889.56
  5. Step 5: Solve for x
    x = 33,623,615,889.56/299,487.95
  6. Step 6: Final answer
    x = 112,270.35

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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.