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Finding the Fourth Proportional to 283,412.70, 425,579.85 and 205,076.70

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Solution

The fourth proportional to 283,412.70, 425,579.85 and 205,076.70 is: 307,948.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,412.70 : 425,579.85 = 205,076.70 : x
  2. Step 2: Convert to fraction form
    283,412.70/425,579.85 = 205,076.70/x
  3. Step 3: Cross multiply
    283,412.70x = 425,579.85 × 205,076.70
  4. Step 4: Simplify right side
    283,412.70x = 87,276,511,224.50
  5. Step 5: Solve for x
    x = 87,276,511,224.50/283,412.70
  6. Step 6: Final answer
    x = 307,948.48

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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.