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Finding the Fourth Proportional to 228,504.21, 315,937.77 and 200,128.56

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Solution

The fourth proportional to 228,504.21, 315,937.77 and 200,128.56 is: 276,704.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,504.21 : 315,937.77 = 200,128.56 : x
  2. Step 2: Convert to fraction form
    228,504.21/315,937.77 = 200,128.56/x
  3. Step 3: Cross multiply
    228,504.21x = 315,937.77 × 200,128.56
  4. Step 4: Simplify right side
    228,504.21x = 63,228,170,959.71
  5. Step 5: Solve for x
    x = 63,228,170,959.71/228,504.21
  6. Step 6: Final answer
    x = 276,704.62

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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.