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Finding the Fourth Proportional to 356,385.54, 491,835.56 and 203,454.71

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Solution

The fourth proportional to 356,385.54, 491,835.56 and 203,454.71 is: 280,780.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,385.54 : 491,835.56 = 203,454.71 : x
  2. Step 2: Convert to fraction form
    356,385.54/491,835.56 = 203,454.71/x
  3. Step 3: Cross multiply
    356,385.54x = 491,835.56 × 203,454.71
  4. Step 4: Simplify right side
    356,385.54x = 100,066,260,739.85
  5. Step 5: Solve for x
    x = 100,066,260,739.85/356,385.54
  6. Step 6: Final answer
    x = 280,780.92

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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.