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Finding the Fourth Proportional to 392,693.76, 541,902.51 and 239,987.34

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Solution

The fourth proportional to 392,693.76, 541,902.51 and 239,987.34 is: 331,173.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,693.76 : 541,902.51 = 239,987.34 : x
  2. Step 2: Convert to fraction form
    392,693.76/541,902.51 = 239,987.34/x
  3. Step 3: Cross multiply
    392,693.76x = 541,902.51 × 239,987.34
  4. Step 4: Simplify right side
    392,693.76x = 130,049,741,914.22
  5. Step 5: Solve for x
    x = 130,049,741,914.22/392,693.76
  6. Step 6: Final answer
    x = 331,173.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.