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Finding the Fourth Proportional to 384,453.45, 530,560.77 and 212,380.29

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Solution

The fourth proportional to 384,453.45, 530,560.77 and 212,380.29 is: 293,093.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,453.45 : 530,560.77 = 212,380.29 : x
  2. Step 2: Convert to fraction form
    384,453.45/530,560.77 = 212,380.29/x
  3. Step 3: Cross multiply
    384,453.45x = 530,560.77 × 212,380.29
  4. Step 4: Simplify right side
    384,453.45x = 112,680,650,195.22
  5. Step 5: Solve for x
    x = 112,680,650,195.22/384,453.45
  6. Step 6: Final answer
    x = 293,093.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.