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Finding the Fourth Proportional to 299,172.67, 448,755.55 and 85,945.84

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Solution

The fourth proportional to 299,172.67, 448,755.55 and 85,945.84 is: 128,917.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,172.67 : 448,755.55 = 85,945.84 : x
  2. Step 2: Convert to fraction form
    299,172.67/448,755.55 = 85,945.84/x
  3. Step 3: Cross multiply
    299,172.67x = 448,755.55 × 85,945.84
  4. Step 4: Simplify right side
    299,172.67x = 38,568,672,699.41
  5. Step 5: Solve for x
    x = 38,568,672,699.41/299,172.67
  6. Step 6: Final answer
    x = 128,917.77

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1.5x scale

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.