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Finding the Fourth Proportional to 221,283.70, 331,916.91 and 63,512.10

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Solution

The fourth proportional to 221,283.70, 331,916.91 and 63,512.10 is: 95,265.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,283.70 : 331,916.91 = 63,512.10 : x
  2. Step 2: Convert to fraction form
    221,283.70/331,916.91 = 63,512.10/x
  3. Step 3: Cross multiply
    221,283.70x = 331,916.91 × 63,512.10
  4. Step 4: Simplify right side
    221,283.70x = 21,080,739,741.44
  5. Step 5: Solve for x
    x = 21,080,739,741.44/221,283.70
  6. Step 6: Final answer
    x = 95,265.67

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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.