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Finding the Fourth Proportional to 305,979.99, 458,861.37 and 89,778.36

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Solution

The fourth proportional to 305,979.99, 458,861.37 and 89,778.36 is: 134,635.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,979.99 : 458,861.37 = 89,778.36 : x
  2. Step 2: Convert to fraction form
    305,979.99/458,861.37 = 89,778.36/x
  3. Step 3: Cross multiply
    305,979.99x = 458,861.37 × 89,778.36
  4. Step 4: Simplify right side
    305,979.99x = 41,195,821,265.95
  5. Step 5: Solve for x
    x = 41,195,821,265.95/305,979.99
  6. Step 6: Final answer
    x = 134,635.67

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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.