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Finding the Fourth Proportional to 422,897.72, 583,612.38 and 231,910.66

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Solution

The fourth proportional to 422,897.72, 583,612.38 and 231,910.66 is: 320,044.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,897.72 : 583,612.38 = 231,910.66 : x
  2. Step 2: Convert to fraction form
    422,897.72/583,612.38 = 231,910.66/x
  3. Step 3: Cross multiply
    422,897.72x = 583,612.38 × 231,910.66
  4. Step 4: Simplify right side
    422,897.72x = 135,345,932,229.97
  5. Step 5: Solve for x
    x = 135,345,932,229.97/422,897.72
  6. Step 6: Final answer
    x = 320,044.13

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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.