Home / 663,211.35-994,981.05-213,979.68

Finding the Fourth Proportional to 663,211.35, 994,981.05 and 213,979.68

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Solution

The fourth proportional to 663,211.35, 994,981.05 and 213,979.68 is: 321,022.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,211.35 : 994,981.05 = 213,979.68 : x
  2. Step 2: Convert to fraction form
    663,211.35/994,981.05 = 213,979.68/x
  3. Step 3: Cross multiply
    663,211.35x = 994,981.05 × 213,979.68
  4. Step 4: Simplify right side
    663,211.35x = 212,905,726,685.06
  5. Step 5: Solve for x
    x = 212,905,726,685.06/663,211.35
  6. Step 6: Final answer
    x = 321,022.44

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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.