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Finding the Fourth Proportional to 329,389.23, 494,153.64 and 126,990.48

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Solution

The fourth proportional to 329,389.23, 494,153.64 and 126,990.48 is: 190,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,389.23 : 494,153.64 = 126,990.48 : x
  2. Step 2: Convert to fraction form
    329,389.23/494,153.64 = 126,990.48/x
  3. Step 3: Cross multiply
    329,389.23x = 494,153.64 × 126,990.48
  4. Step 4: Simplify right side
    329,389.23x = 62,752,807,937.35
  5. Step 5: Solve for x
    x = 62,752,807,937.35/329,389.23
  6. Step 6: Final answer
    x = 190,512.63

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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.