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Finding the Fourth Proportional to 217,513.92, 300,183 and 122,026.80

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Solution

The fourth proportional to 217,513.92, 300,183 and 122,026.80 is: 168,404.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,513.92 : 300,183 = 122,026.80 : x
  2. Step 2: Convert to fraction form
    217,513.92/300,183 = 122,026.80/x
  3. Step 3: Cross multiply
    217,513.92x = 300,183 × 122,026.80
  4. Step 4: Simplify right side
    217,513.92x = 36,630,370,904.40
  5. Step 5: Solve for x
    x = 36,630,370,904.40/217,513.92
  6. Step 6: Final answer
    x = 168,404.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.