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Finding the Fourth Proportional to 479,671.73, 661,936.47 and 261,872.96

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Solution

The fourth proportional to 479,671.73, 661,936.47 and 261,872.96 is: 361,378.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,671.73 : 661,936.47 = 261,872.96 : x
  2. Step 2: Convert to fraction form
    479,671.73/661,936.47 = 261,872.96/x
  3. Step 3: Cross multiply
    479,671.73x = 661,936.47 × 261,872.96
  4. Step 4: Simplify right side
    479,671.73x = 173,343,262,730.85
  5. Step 5: Solve for x
    x = 173,343,262,730.85/479,671.73
  6. Step 6: Final answer
    x = 361,378.94

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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.