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Finding the Fourth Proportional to 355,503.72, 490,604.40 and 194,365.56

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Solution

The fourth proportional to 355,503.72, 490,604.40 and 194,365.56 is: 268,229.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,503.72 : 490,604.40 = 194,365.56 : x
  2. Step 2: Convert to fraction form
    355,503.72/490,604.40 = 194,365.56/x
  3. Step 3: Cross multiply
    355,503.72x = 490,604.40 × 194,365.56
  4. Step 4: Simplify right side
    355,503.72x = 95,356,598,944.46
  5. Step 5: Solve for x
    x = 95,356,598,944.46/355,503.72
  6. Step 6: Final answer
    x = 268,229.54

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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.