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Finding the Fourth Proportional to 295,891.49, 443,840.48 and 85,531.25

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Solution

The fourth proportional to 295,891.49, 443,840.48 and 85,531.25 is: 128,297.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,891.49 : 443,840.48 = 85,531.25 : x
  2. Step 2: Convert to fraction form
    295,891.49/443,840.48 = 85,531.25/x
  3. Step 3: Cross multiply
    295,891.49x = 443,840.48 × 85,531.25
  4. Step 4: Simplify right side
    295,891.49x = 37,962,231,055
  5. Step 5: Solve for x
    x = 37,962,231,055/295,891.49
  6. Step 6: Final answer
    x = 128,297.81

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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.