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Finding the Fourth Proportional to 455,092.29, 682,612.92 and 139,548.33

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Solution

The fourth proportional to 455,092.29, 682,612.92 and 139,548.33 is: 209,314.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,092.29 : 682,612.92 = 139,548.33 : x
  2. Step 2: Convert to fraction form
    455,092.29/682,612.92 = 139,548.33/x
  3. Step 3: Cross multiply
    455,092.29x = 682,612.92 × 139,548.33
  4. Step 4: Simplify right side
    455,092.29x = 95,257,493,022.42
  5. Step 5: Solve for x
    x = 95,257,493,022.42/455,092.29
  6. Step 6: Final answer
    x = 209,314.67

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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.