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Finding the Fourth Proportional to 372,157.92, 513,694.89 and 211,120.02

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Solution

The fourth proportional to 372,157.92, 513,694.89 and 211,120.02 is: 291,411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,157.92 : 513,694.89 = 211,120.02 : x
  2. Step 2: Convert to fraction form
    372,157.92/513,694.89 = 211,120.02/x
  3. Step 3: Cross multiply
    372,157.92x = 513,694.89 × 211,120.02
  4. Step 4: Simplify right side
    372,157.92x = 108,451,275,450.70
  5. Step 5: Solve for x
    x = 108,451,275,450.70/372,157.92
  6. Step 6: Final answer
    x = 291,411.98

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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.