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Finding the Fourth Proportional to 521,992.72, 783,040.92 and 166,917.52

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Solution

The fourth proportional to 521,992.72, 783,040.92 and 166,917.52 is: 250,392.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,992.72 : 783,040.92 = 166,917.52 : x
  2. Step 2: Convert to fraction form
    521,992.72/783,040.92 = 166,917.52/x
  3. Step 3: Cross multiply
    521,992.72x = 783,040.92 × 166,917.52
  4. Step 4: Simplify right side
    521,992.72x = 130,703,248,424.92
  5. Step 5: Solve for x
    x = 130,703,248,424.92/521,992.72
  6. Step 6: Final answer
    x = 250,392.86

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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.