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Finding the Fourth Proportional to 262,411.20, 393,616.80 and 129,550.95

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Solution

The fourth proportional to 262,411.20, 393,616.80 and 129,550.95 is: 194,326.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,411.20 : 393,616.80 = 129,550.95 : x
  2. Step 2: Convert to fraction form
    262,411.20/393,616.80 = 129,550.95/x
  3. Step 3: Cross multiply
    262,411.20x = 393,616.80 × 129,550.95
  4. Step 4: Simplify right side
    262,411.20x = 50,993,430,375.96
  5. Step 5: Solve for x
    x = 50,993,430,375.96/262,411.20
  6. Step 6: Final answer
    x = 194,326.43

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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.