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Finding the Fourth Proportional to 422,663.82, 633,995.76 and 107,122.38

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Solution

The fourth proportional to 422,663.82, 633,995.76 and 107,122.38 is: 160,683.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,663.82 : 633,995.76 = 107,122.38 : x
  2. Step 2: Convert to fraction form
    422,663.82/633,995.76 = 107,122.38/x
  3. Step 3: Cross multiply
    422,663.82x = 633,995.76 × 107,122.38
  4. Step 4: Simplify right side
    422,663.82x = 67,915,134,721.11
  5. Step 5: Solve for x
    x = 67,915,134,721.11/422,663.82
  6. Step 6: Final answer
    x = 160,683.58

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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.