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Finding the Fourth Proportional to 288,441.92, 398,057.92 and 159,388.72

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Solution

The fourth proportional to 288,441.92, 398,057.92 and 159,388.72 is: 219,960.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,441.92 : 398,057.92 = 159,388.72 : x
  2. Step 2: Convert to fraction form
    288,441.92/398,057.92 = 159,388.72/x
  3. Step 3: Cross multiply
    288,441.92x = 398,057.92 × 159,388.72
  4. Step 4: Simplify right side
    288,441.92x = 63,445,942,354.66
  5. Step 5: Solve for x
    x = 63,445,942,354.66/288,441.92
  6. Step 6: Final answer
    x = 219,960.89

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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.