Home / 219,778.72-329,707.55-77,706.47

Finding the Fourth Proportional to 219,778.72, 329,707.55 and 77,706.47

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Solution

The fourth proportional to 219,778.72, 329,707.55 and 77,706.47 is: 116,573.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,778.72 : 329,707.55 = 77,706.47 : x
  2. Step 2: Convert to fraction form
    219,778.72/329,707.55 = 77,706.47/x
  3. Step 3: Cross multiply
    219,778.72x = 329,707.55 × 77,706.47
  4. Step 4: Simplify right side
    219,778.72x = 25,620,410,861.38
  5. Step 5: Solve for x
    x = 25,620,410,861.38/219,778.72
  6. Step 6: Final answer
    x = 116,573.67

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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.