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Finding the Fourth Proportional to 355,265.70, 490,594.08 and 228,162.72

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Solution

The fourth proportional to 355,265.70, 490,594.08 and 228,162.72 is: 315,074.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,265.70 : 490,594.08 = 228,162.72 : x
  2. Step 2: Convert to fraction form
    355,265.70/490,594.08 = 228,162.72/x
  3. Step 3: Cross multiply
    355,265.70x = 490,594.08 × 228,162.72
  4. Step 4: Simplify right side
    355,265.70x = 111,935,279,708.70
  5. Step 5: Solve for x
    x = 111,935,279,708.70/355,265.70
  6. Step 6: Final answer
    x = 315,074.83

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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.