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Finding the Fourth Proportional to 355,261.97, 490,588.85 and 228,159

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Solution

The fourth proportional to 355,261.97, 490,588.85 and 228,159 is: 315,069.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,261.97 : 490,588.85 = 228,159 : x
  2. Step 2: Convert to fraction form
    355,261.97/490,588.85 = 228,159/x
  3. Step 3: Cross multiply
    355,261.97x = 490,588.85 × 228,159
  4. Step 4: Simplify right side
    355,261.97x = 111,932,261,997.55
  5. Step 5: Solve for x
    x = 111,932,261,997.55/355,261.97
  6. Step 6: Final answer
    x = 315,069.64

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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.