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Finding the Fourth Proportional to 299,725.80, 449,531.10 and 89,370.60

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Solution

The fourth proportional to 299,725.80, 449,531.10 and 89,370.60 is: 134,038.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,725.80 : 449,531.10 = 89,370.60 : x
  2. Step 2: Convert to fraction form
    299,725.80/449,531.10 = 89,370.60/x
  3. Step 3: Cross multiply
    299,725.80x = 449,531.10 × 89,370.60
  4. Step 4: Simplify right side
    299,725.80x = 40,174,864,125.66
  5. Step 5: Solve for x
    x = 40,174,864,125.66/299,725.80
  6. Step 6: Final answer
    x = 134,038.73

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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.