Home / 638,847.76-958,064.22-212,269.02

Finding the Fourth Proportional to 638,847.76, 958,064.22 and 212,269.02

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Solution

The fourth proportional to 638,847.76, 958,064.22 and 212,269.02 is: 318,334.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,847.76 : 958,064.22 = 212,269.02 : x
  2. Step 2: Convert to fraction form
    638,847.76/958,064.22 = 212,269.02/x
  3. Step 3: Cross multiply
    638,847.76x = 958,064.22 × 212,269.02
  4. Step 4: Simplify right side
    638,847.76x = 203,367,355,998.25
  5. Step 5: Solve for x
    x = 203,367,355,998.25/638,847.76
  6. Step 6: Final answer
    x = 318,334.62

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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.