Home / 645,203.18-967,949.22-218,713.88

Finding the Fourth Proportional to 645,203.18, 967,949.22 and 218,713.88

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Solution

The fourth proportional to 645,203.18, 967,949.22 and 218,713.88 is: 328,119.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,203.18 : 967,949.22 = 218,713.88 : x
  2. Step 2: Convert to fraction form
    645,203.18/967,949.22 = 218,713.88/x
  3. Step 3: Cross multiply
    645,203.18x = 967,949.22 × 218,713.88
  4. Step 4: Simplify right side
    645,203.18x = 211,703,929,549.17
  5. Step 5: Solve for x
    x = 211,703,929,549.17/645,203.18
  6. Step 6: Final answer
    x = 328,119.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.