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Finding the Fourth Proportional to 396,005.91, 593,148.63 and 243,738.87

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Solution

The fourth proportional to 396,005.91, 593,148.63 and 243,738.87 is: 365,078.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,005.91 : 593,148.63 = 243,738.87 : x
  2. Step 2: Convert to fraction form
    396,005.91/593,148.63 = 243,738.87/x
  3. Step 3: Cross multiply
    396,005.91x = 593,148.63 × 243,738.87
  4. Step 4: Simplify right side
    396,005.91x = 144,573,376,818.25
  5. Step 5: Solve for x
    x = 144,573,376,818.25/396,005.91
  6. Step 6: Final answer
    x = 365,078.84

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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.