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Finding the Fourth Proportional to 219,758.92, 329,646.48 and 61,991.59

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Solution

The fourth proportional to 219,758.92, 329,646.48 and 61,991.59 is: 92,989.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,758.92 : 329,646.48 = 61,991.59 : x
  2. Step 2: Convert to fraction form
    219,758.92/329,646.48 = 61,991.59/x
  3. Step 3: Cross multiply
    219,758.92x = 329,646.48 × 61,991.59
  4. Step 4: Simplify right side
    219,758.92x = 20,435,309,433.10
  5. Step 5: Solve for x
    x = 20,435,309,433.10/219,758.92
  6. Step 6: Final answer
    x = 92,989.67

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1.5x scale

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.