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Finding the Fourth Proportional to 393,029.01, 589,616.82 and 126,761.76

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Solution

The fourth proportional to 393,029.01, 589,616.82 and 126,761.76 is: 190,166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,029.01 : 589,616.82 = 126,761.76 : x
  2. Step 2: Convert to fraction form
    393,029.01/589,616.82 = 126,761.76/x
  3. Step 3: Cross multiply
    393,029.01x = 589,616.82 × 126,761.76
  4. Step 4: Simplify right side
    393,029.01x = 74,740,865,828.80
  5. Step 5: Solve for x
    x = 74,740,865,828.80/393,029.01
  6. Step 6: Final answer
    x = 190,166.28

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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.