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Finding the Fourth Proportional to 308,790.72, 463,407.48 and 131,422.32

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Solution

The fourth proportional to 308,790.72, 463,407.48 and 131,422.32 is: 197,227.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,790.72 : 463,407.48 = 131,422.32 : x
  2. Step 2: Convert to fraction form
    308,790.72/463,407.48 = 131,422.32/x
  3. Step 3: Cross multiply
    308,790.72x = 463,407.48 × 131,422.32
  4. Step 4: Simplify right side
    308,790.72x = 60,902,086,126.95
  5. Step 5: Solve for x
    x = 60,902,086,126.95/308,790.72
  6. Step 6: Final answer
    x = 197,227.71

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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.