Home / 320,535.20-442,199.58-193,138.40

Finding the Fourth Proportional to 320,535.20, 442,199.58 and 193,138.40

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Solution

The fourth proportional to 320,535.20, 442,199.58 and 193,138.40 is: 266,447.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,535.20 : 442,199.58 = 193,138.40 : x
  2. Step 2: Convert to fraction form
    320,535.20/442,199.58 = 193,138.40/x
  3. Step 3: Cross multiply
    320,535.20x = 442,199.58 × 193,138.40
  4. Step 4: Simplify right side
    320,535.20x = 85,405,719,361.87
  5. Step 5: Solve for x
    x = 85,405,719,361.87/320,535.20
  6. Step 6: Final answer
    x = 266,447.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.