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Finding the Fourth Proportional to 488,387.40, 731,997.90 and 204,077.40

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Solution

The fourth proportional to 488,387.40, 731,997.90 and 204,077.40 is: 305,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,387.40 : 731,997.90 = 204,077.40 : x
  2. Step 2: Convert to fraction form
    488,387.40/731,997.90 = 204,077.40/x
  3. Step 3: Cross multiply
    488,387.40x = 731,997.90 × 204,077.40
  4. Step 4: Simplify right side
    488,387.40x = 149,384,228,237.46
  5. Step 5: Solve for x
    x = 149,384,228,237.46/488,387.40
  6. Step 6: Final answer
    x = 305,872.40

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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.