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Finding the Fourth Proportional to 277,239.45, 415,874.30 and 87,685.66

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Solution

The fourth proportional to 277,239.45, 415,874.30 and 87,685.66 is: 131,533.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,239.45 : 415,874.30 = 87,685.66 : x
  2. Step 2: Convert to fraction form
    277,239.45/415,874.30 = 87,685.66/x
  3. Step 3: Cross multiply
    277,239.45x = 415,874.30 × 87,685.66
  4. Step 4: Simplify right side
    277,239.45x = 36,466,212,472.54
  5. Step 5: Solve for x
    x = 36,466,212,472.54/277,239.45
  6. Step 6: Final answer
    x = 131,533.27

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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.