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Finding the Fourth Proportional to 372,380.63, 513,870.14 and 211,232.22

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Solution

The fourth proportional to 372,380.63, 513,870.14 and 211,232.22 is: 291,491.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,380.63 : 513,870.14 = 211,232.22 : x
  2. Step 2: Convert to fraction form
    372,380.63/513,870.14 = 211,232.22/x
  3. Step 3: Cross multiply
    372,380.63x = 513,870.14 × 211,232.22
  4. Step 4: Simplify right side
    372,380.63x = 108,545,930,463.91
  5. Step 5: Solve for x
    x = 108,545,930,463.91/372,380.63
  6. Step 6: Final answer
    x = 291,491.88

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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.