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Finding the Fourth Proportional to 384,471.40, 576,015.90 and 329,175.40

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Solution

The fourth proportional to 384,471.40, 576,015.90 and 329,175.40 is: 493,171.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,471.40 : 576,015.90 = 329,175.40 : x
  2. Step 2: Convert to fraction form
    384,471.40/576,015.90 = 329,175.40/x
  3. Step 3: Cross multiply
    384,471.40x = 576,015.90 × 329,175.40
  4. Step 4: Simplify right side
    384,471.40x = 189,610,264,288.86
  5. Step 5: Solve for x
    x = 189,610,264,288.86/384,471.40
  6. Step 6: Final answer
    x = 493,171.31

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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.