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Finding the Fourth Proportional to 217,953.01, 300,777.87 and 131,910.90

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Solution

The fourth proportional to 217,953.01, 300,777.87 and 131,910.90 is: 182,038.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,953.01 : 300,777.87 = 131,910.90 : x
  2. Step 2: Convert to fraction form
    217,953.01/300,777.87 = 131,910.90/x
  3. Step 3: Cross multiply
    217,953.01x = 300,777.87 × 131,910.90
  4. Step 4: Simplify right side
    217,953.01x = 39,675,879,531.78
  5. Step 5: Solve for x
    x = 39,675,879,531.78/217,953.01
  6. Step 6: Final answer
    x = 182,038.69

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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.