Home / 320,399.10-479,942.55-162,716.40

Finding the Fourth Proportional to 320,399.10, 479,942.55 and 162,716.40

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Solution

The fourth proportional to 320,399.10, 479,942.55 and 162,716.40 is: 243,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,399.10 : 479,942.55 = 162,716.40 : x
  2. Step 2: Convert to fraction form
    320,399.10/479,942.55 = 162,716.40/x
  3. Step 3: Cross multiply
    320,399.10x = 479,942.55 × 162,716.40
  4. Step 4: Simplify right side
    320,399.10x = 78,094,523,942.82
  5. Step 5: Solve for x
    x = 78,094,523,942.82/320,399.10
  6. Step 6: Final answer
    x = 243,741.40

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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.