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Finding the Fourth Proportional to 381,301.55, 526,212.62 and 228,310.54

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Solution

The fourth proportional to 381,301.55, 526,212.62 and 228,310.54 is: 315,078.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,301.55 : 526,212.62 = 228,310.54 : x
  2. Step 2: Convert to fraction form
    381,301.55/526,212.62 = 228,310.54/x
  3. Step 3: Cross multiply
    381,301.55x = 526,212.62 × 228,310.54
  4. Step 4: Simplify right side
    381,301.55x = 120,139,884,845.31
  5. Step 5: Solve for x
    x = 120,139,884,845.31/381,301.55
  6. Step 6: Final answer
    x = 315,078.41

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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.