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Finding the Fourth Proportional to 355,266.70, 490,595.46 and 228,163.72

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Solution

The fourth proportional to 355,266.70, 490,595.46 and 228,163.72 is: 315,076.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,266.70 : 490,595.46 = 228,163.72 : x
  2. Step 2: Convert to fraction form
    355,266.70/490,595.46 = 228,163.72/x
  3. Step 3: Cross multiply
    355,266.70x = 490,595.46 × 228,163.72
  4. Step 4: Simplify right side
    355,266.70x = 111,936,085,168.71
  5. Step 5: Solve for x
    x = 111,936,085,168.71/355,266.70
  6. Step 6: Final answer
    x = 315,076.21

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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.