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Finding the Fourth Proportional to 384,092.40, 576,138.60 and 290,780.40

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Solution

The fourth proportional to 384,092.40, 576,138.60 and 290,780.40 is: 436,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,092.40 : 576,138.60 = 290,780.40 : x
  2. Step 2: Convert to fraction form
    384,092.40/576,138.60 = 290,780.40/x
  3. Step 3: Cross multiply
    384,092.40x = 576,138.60 × 290,780.40
  4. Step 4: Simplify right side
    384,092.40x = 167,529,812,563.44
  5. Step 5: Solve for x
    x = 167,529,812,563.44/384,092.40
  6. Step 6: Final answer
    x = 436,170.60

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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.