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Finding the Fourth Proportional to 392,388.81, 541,335.47 and 284,720.37

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Solution

The fourth proportional to 392,388.81, 541,335.47 and 284,720.37 is: 392,797.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,388.81 : 541,335.47 = 284,720.37 : x
  2. Step 2: Convert to fraction form
    392,388.81/541,335.47 = 284,720.37/x
  3. Step 3: Cross multiply
    392,388.81x = 541,335.47 × 284,720.37
  4. Step 4: Simplify right side
    392,388.81x = 154,129,233,888.92
  5. Step 5: Solve for x
    x = 154,129,233,888.92/392,388.81
  6. Step 6: Final answer
    x = 392,797.22

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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.