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Finding the Fourth Proportional to 203,503.72, 280,840.86 and 122,945.68

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Solution

The fourth proportional to 203,503.72, 280,840.86 and 122,945.68 is: 169,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,503.72 : 280,840.86 = 122,945.68 : x
  2. Step 2: Convert to fraction form
    203,503.72/280,840.86 = 122,945.68/x
  3. Step 3: Cross multiply
    203,503.72x = 280,840.86 × 122,945.68
  4. Step 4: Simplify right side
    203,503.72x = 34,528,170,504.48
  5. Step 5: Solve for x
    x = 34,528,170,504.48/203,503.72
  6. Step 6: Final answer
    x = 169,668.50

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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.