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Finding the Fourth Proportional to 349,056, 481,680 and 212,932.80

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Solution

The fourth proportional to 349,056, 481,680 and 212,932.80 is: 293,836.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,056 : 481,680 = 212,932.80 : x
  2. Step 2: Convert to fraction form
    349,056/481,680 = 212,932.80/x
  3. Step 3: Cross multiply
    349,056x = 481,680 × 212,932.80
  4. Step 4: Simplify right side
    349,056x = 102,565,471,104
  5. Step 5: Solve for x
    x = 102,565,471,104/349,056
  6. Step 6: Final answer
    x = 293,836.72

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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.