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Finding the Fourth Proportional to 288,778.79, 398,354.74 and 167,906.72

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Solution

The fourth proportional to 288,778.79, 398,354.74 and 167,906.72 is: 231,618.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,778.79 : 398,354.74 = 167,906.72 : x
  2. Step 2: Convert to fraction form
    288,778.79/398,354.74 = 167,906.72/x
  3. Step 3: Cross multiply
    288,778.79x = 398,354.74 × 167,906.72
  4. Step 4: Simplify right side
    288,778.79x = 66,886,437,789.85
  5. Step 5: Solve for x
    x = 66,886,437,789.85/288,778.79
  6. Step 6: Final answer
    x = 231,618.25

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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.