Home / 670,221.76-1,005,119.32-220,858.80

Finding the Fourth Proportional to 670,221.76, 1,005,119.32 and 220,858.80

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Solution

The fourth proportional to 670,221.76, 1,005,119.32 and 220,858.80 is: 331,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,221.76 : 1,005,119.32 = 220,858.80 : x
  2. Step 2: Convert to fraction form
    670,221.76/1,005,119.32 = 220,858.80/x
  3. Step 3: Cross multiply
    670,221.76x = 1,005,119.32 × 220,858.80
  4. Step 4: Simplify right side
    670,221.76x = 221,989,446,872.02
  5. Step 5: Solve for x
    x = 221,989,446,872.02/670,221.76
  6. Step 6: Final answer
    x = 331,217.90

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Double scale
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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.