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Finding the Fourth Proportional to 217,613.88, 326,383.20 and 57,690.87

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Solution

The fourth proportional to 217,613.88, 326,383.20 and 57,690.87 is: 86,526.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,613.88 : 326,383.20 = 57,690.87 : x
  2. Step 2: Convert to fraction form
    217,613.88/326,383.20 = 57,690.87/x
  3. Step 3: Cross multiply
    217,613.88x = 326,383.20 × 57,690.87
  4. Step 4: Simplify right side
    217,613.88x = 18,829,330,761.38
  5. Step 5: Solve for x
    x = 18,829,330,761.38/217,613.88
  6. Step 6: Final answer
    x = 86,526.33

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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.