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Finding the Fourth Proportional to 263,280.60, 394,920.90 and 105,622.20

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Solution

The fourth proportional to 263,280.60, 394,920.90 and 105,622.20 is: 158,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,280.60 : 394,920.90 = 105,622.20 : x
  2. Step 2: Convert to fraction form
    263,280.60/394,920.90 = 105,622.20/x
  3. Step 3: Cross multiply
    263,280.60x = 394,920.90 × 105,622.20
  4. Step 4: Simplify right side
    263,280.60x = 41,712,414,283.98
  5. Step 5: Solve for x
    x = 41,712,414,283.98/263,280.60
  6. Step 6: Final answer
    x = 158,433.30

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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.