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Finding the Fourth Proportional to 299,099.40, 448,649.10 and 215,118.60

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Solution

The fourth proportional to 299,099.40, 448,649.10 and 215,118.60 is: 322,677.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,099.40 : 448,649.10 = 215,118.60 : x
  2. Step 2: Convert to fraction form
    299,099.40/448,649.10 = 215,118.60/x
  3. Step 3: Cross multiply
    299,099.40x = 448,649.10 × 215,118.60
  4. Step 4: Simplify right side
    299,099.40x = 96,512,766,283.26
  5. Step 5: Solve for x
    x = 96,512,766,283.26/299,099.40
  6. Step 6: Final answer
    x = 322,677.90

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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.