Home / 289,945.72-400,120.16-162,618.56

Finding the Fourth Proportional to 289,945.72, 400,120.16 and 162,618.56

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Solution

The fourth proportional to 289,945.72, 400,120.16 and 162,618.56 is: 224,410.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,945.72 : 400,120.16 = 162,618.56 : x
  2. Step 2: Convert to fraction form
    289,945.72/400,120.16 = 162,618.56/x
  3. Step 3: Cross multiply
    289,945.72x = 400,120.16 × 162,618.56
  4. Step 4: Simplify right side
    289,945.72x = 65,066,964,246.17
  5. Step 5: Solve for x
    x = 65,066,964,246.17/289,945.72
  6. Step 6: Final answer
    x = 224,410.85

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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.