Home / 638,972.58-958,099.23-212,279.97

Finding the Fourth Proportional to 638,972.58, 958,099.23 and 212,279.97

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Solution

The fourth proportional to 638,972.58, 958,099.23 and 212,279.97 is: 318,300.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,972.58 : 958,099.23 = 212,279.97 : x
  2. Step 2: Convert to fraction form
    638,972.58/958,099.23 = 212,279.97/x
  3. Step 3: Cross multiply
    638,972.58x = 958,099.23 × 212,279.97
  4. Step 4: Simplify right side
    638,972.58x = 203,385,275,801.42
  5. Step 5: Solve for x
    x = 203,385,275,801.42/638,972.58
  6. Step 6: Final answer
    x = 318,300.48

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1.5x scale

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.