Home / 638,914.52-958,270.18-212,414.90

Finding the Fourth Proportional to 638,914.52, 958,270.18 and 212,414.90

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Solution

The fourth proportional to 638,914.52, 958,270.18 and 212,414.90 is: 318,588.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,914.52 : 958,270.18 = 212,414.90 : x
  2. Step 2: Convert to fraction form
    638,914.52/958,270.18 = 212,414.90/x
  3. Step 3: Cross multiply
    638,914.52x = 958,270.18 × 212,414.90
  4. Step 4: Simplify right side
    638,914.52x = 203,550,864,457.68
  5. Step 5: Solve for x
    x = 203,550,864,457.68/638,914.52
  6. Step 6: Final answer
    x = 318,588.57

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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.