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Finding the Fourth Proportional to 295,478.82, 443,219.85 and 85,121.82

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Solution

The fourth proportional to 295,478.82, 443,219.85 and 85,121.82 is: 127,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,478.82 : 443,219.85 = 85,121.82 : x
  2. Step 2: Convert to fraction form
    295,478.82/443,219.85 = 85,121.82/x
  3. Step 3: Cross multiply
    295,478.82x = 443,219.85 × 85,121.82
  4. Step 4: Simplify right side
    295,478.82x = 37,727,680,292.13
  5. Step 5: Solve for x
    x = 37,727,680,292.13/295,478.82
  6. Step 6: Final answer
    x = 127,683.20

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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.