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Finding the Fourth Proportional to 384,234.80, 576,006.60 and 243,921.20

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Solution

The fourth proportional to 384,234.80, 576,006.60 and 243,921.20 is: 365,662.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,234.80 : 576,006.60 = 243,921.20 : x
  2. Step 2: Convert to fraction form
    384,234.80/576,006.60 = 243,921.20/x
  3. Step 3: Cross multiply
    384,234.80x = 576,006.60 × 243,921.20
  4. Step 4: Simplify right side
    384,234.80x = 140,500,221,079.92
  5. Step 5: Solve for x
    x = 140,500,221,079.92/384,234.80
  6. Step 6: Final answer
    x = 365,662.41

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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.