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Finding the Fourth Proportional to 439,404.67, 659,107.01 and 139,977.10

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Solution

The fourth proportional to 439,404.67, 659,107.01 and 139,977.10 is: 209,965.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,404.67 : 659,107.01 = 139,977.10 : x
  2. Step 2: Convert to fraction form
    439,404.67/659,107.01 = 139,977.10/x
  3. Step 3: Cross multiply
    439,404.67x = 659,107.01 × 139,977.10
  4. Step 4: Simplify right side
    439,404.67x = 92,259,887,849.47
  5. Step 5: Solve for x
    x = 92,259,887,849.47/439,404.67
  6. Step 6: Final answer
    x = 209,965.65

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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.