Home / 382,412.72-527,729.99-212,643.20

Finding the Fourth Proportional to 382,412.72, 527,729.99 and 212,643.20

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Solution

The fourth proportional to 382,412.72, 527,729.99 and 212,643.20 is: 293,447.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,412.72 : 527,729.99 = 212,643.20 : x
  2. Step 2: Convert to fraction form
    382,412.72/527,729.99 = 212,643.20/x
  3. Step 3: Cross multiply
    382,412.72x = 527,729.99 × 212,643.20
  4. Step 4: Simplify right side
    382,412.72x = 112,218,190,107.70
  5. Step 5: Solve for x
    x = 112,218,190,107.70/382,412.72
  6. Step 6: Final answer
    x = 293,447.85

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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.