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Finding the Fourth Proportional to 392,994.32, 589,606.29 and 126,748.94

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Solution

The fourth proportional to 392,994.32, 589,606.29 and 126,748.94 is: 190,160.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,994.32 : 589,606.29 = 126,748.94 : x
  2. Step 2: Convert to fraction form
    392,994.32/589,606.29 = 126,748.94/x
  3. Step 3: Cross multiply
    392,994.32x = 589,606.29 × 126,748.94
  4. Step 4: Simplify right side
    392,994.32x = 74,731,969,326.80
  5. Step 5: Solve for x
    x = 74,731,969,326.80/392,994.32
  6. Step 6: Final answer
    x = 190,160.43

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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.