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Finding the Fourth Proportional to 356,365.09, 491,660.89 and 203,292.86

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Solution

The fourth proportional to 356,365.09, 491,660.89 and 203,292.86 is: 280,474.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,365.09 : 491,660.89 = 203,292.86 : x
  2. Step 2: Convert to fraction form
    356,365.09/491,660.89 = 203,292.86/x
  3. Step 3: Cross multiply
    356,365.09x = 491,660.89 × 203,292.86
  4. Step 4: Simplify right side
    356,365.09x = 99,951,145,511.71
  5. Step 5: Solve for x
    x = 99,951,145,511.71/356,365.09
  6. Step 6: Final answer
    x = 280,474.01

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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.