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Finding the Fourth Proportional to 205,872.84, 308,663.46 and 79,406.73

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Solution

The fourth proportional to 205,872.84, 308,663.46 and 79,406.73 is: 119,053.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,872.84 : 308,663.46 = 79,406.73 : x
  2. Step 2: Convert to fraction form
    205,872.84/308,663.46 = 79,406.73/x
  3. Step 3: Cross multiply
    205,872.84x = 308,663.46 × 79,406.73
  4. Step 4: Simplify right side
    205,872.84x = 24,509,956,029.09
  5. Step 5: Solve for x
    x = 24,509,956,029.09/205,872.84
  6. Step 6: Final answer
    x = 119,053.86

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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.