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Finding the Fourth Proportional to 374,425.91, 516,743.92 and 221,513.27

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Solution

The fourth proportional to 374,425.91, 516,743.92 and 221,513.27 is: 305,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,425.91 : 516,743.92 = 221,513.27 : x
  2. Step 2: Convert to fraction form
    374,425.91/516,743.92 = 221,513.27/x
  3. Step 3: Cross multiply
    374,425.91x = 516,743.92 × 221,513.27
  4. Step 4: Simplify right side
    374,425.91x = 114,465,633,164.99
  5. Step 5: Solve for x
    x = 114,465,633,164.99/374,425.91
  6. Step 6: Final answer
    x = 305,709.70

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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.