Home / 305,815.96-422,023.53-167,997.20

Finding the Fourth Proportional to 305,815.96, 422,023.53 and 167,997.20

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Solution

The fourth proportional to 305,815.96, 422,023.53 and 167,997.20 is: 231,834.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,815.96 : 422,023.53 = 167,997.20 : x
  2. Step 2: Convert to fraction form
    305,815.96/422,023.53 = 167,997.20/x
  3. Step 3: Cross multiply
    305,815.96x = 422,023.53 × 167,997.20
  4. Step 4: Simplify right side
    305,815.96x = 70,898,769,893.99
  5. Step 5: Solve for x
    x = 70,898,769,893.99/305,815.96
  6. Step 6: Final answer
    x = 231,834.76

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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.