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Finding the Fourth Proportional to 290,462.57, 435,767.78 and 170,620.86

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Solution

The fourth proportional to 290,462.57, 435,767.78 and 170,620.86 is: 255,974.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,462.57 : 435,767.78 = 170,620.86 : x
  2. Step 2: Convert to fraction form
    290,462.57/435,767.78 = 170,620.86/x
  3. Step 3: Cross multiply
    290,462.57x = 435,767.78 × 170,620.86
  4. Step 4: Simplify right side
    290,462.57x = 74,351,072,530.79
  5. Step 5: Solve for x
    x = 74,351,072,530.79/290,462.57
  6. Step 6: Final answer
    x = 255,974.71

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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.