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Finding the Fourth Proportional to 392,512.64, 541,680.51 and 220,460.87

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Solution

The fourth proportional to 392,512.64, 541,680.51 and 220,460.87 is: 304,243.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,512.64 : 541,680.51 = 220,460.87 : x
  2. Step 2: Convert to fraction form
    392,512.64/541,680.51 = 220,460.87/x
  3. Step 3: Cross multiply
    392,512.64x = 541,680.51 × 220,460.87
  4. Step 4: Simplify right side
    392,512.64x = 119,419,353,788.24
  5. Step 5: Solve for x
    x = 119,419,353,788.24/392,512.64
  6. Step 6: Final answer
    x = 304,243.34

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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.