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Finding the Fourth Proportional to 662,977.20, 994,465.80 and 219,745.20

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Solution

The fourth proportional to 662,977.20, 994,465.80 and 219,745.20 is: 329,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,977.20 : 994,465.80 = 219,745.20 : x
  2. Step 2: Convert to fraction form
    662,977.20/994,465.80 = 219,745.20/x
  3. Step 3: Cross multiply
    662,977.20x = 994,465.80 × 219,745.20
  4. Step 4: Simplify right side
    662,977.20x = 218,529,086,114.16
  5. Step 5: Solve for x
    x = 218,529,086,114.16/662,977.20
  6. Step 6: Final answer
    x = 329,617.80

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Similar ratio
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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.