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Finding the Fourth Proportional to 422,048.40, 633,072.60 and 126,560.40

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Solution

The fourth proportional to 422,048.40, 633,072.60 and 126,560.40 is: 189,840.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,048.40 : 633,072.60 = 126,560.40 : x
  2. Step 2: Convert to fraction form
    422,048.40/633,072.60 = 126,560.40/x
  3. Step 3: Cross multiply
    422,048.40x = 633,072.60 × 126,560.40
  4. Step 4: Simplify right side
    422,048.40x = 80,121,921,485.04
  5. Step 5: Solve for x
    x = 80,121,921,485.04/422,048.40
  6. Step 6: Final answer
    x = 189,840.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.