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Finding the Fourth Proportional to 262,850.80, 394,276.20 and 85,363.60

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Solution

The fourth proportional to 262,850.80, 394,276.20 and 85,363.60 is: 128,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,850.80 : 394,276.20 = 85,363.60 : x
  2. Step 2: Convert to fraction form
    262,850.80/394,276.20 = 85,363.60/x
  3. Step 3: Cross multiply
    262,850.80x = 394,276.20 × 85,363.60
  4. Step 4: Simplify right side
    262,850.80x = 33,656,835,826.32
  5. Step 5: Solve for x
    x = 33,656,835,826.32/262,850.80
  6. Step 6: Final answer
    x = 128,045.40

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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.