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Finding the Fourth Proportional to 300,639.88, 414,957.90 and 173,392.12

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Solution

The fourth proportional to 300,639.88, 414,957.90 and 173,392.12 is: 239,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,639.88 : 414,957.90 = 173,392.12 : x
  2. Step 2: Convert to fraction form
    300,639.88/414,957.90 = 173,392.12/x
  3. Step 3: Cross multiply
    300,639.88x = 414,957.90 × 173,392.12
  4. Step 4: Simplify right side
    300,639.88x = 71,950,429,991.75
  5. Step 5: Solve for x
    x = 71,950,429,991.75/300,639.88
  6. Step 6: Final answer
    x = 239,324.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.