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Finding the Fourth Proportional to 392,392.54, 541,491.51 and 229,080.34

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Solution

The fourth proportional to 392,392.54, 541,491.51 and 229,080.34 is: 316,124.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,392.54 : 541,491.51 = 229,080.34 : x
  2. Step 2: Convert to fraction form
    392,392.54/541,491.51 = 229,080.34/x
  3. Step 3: Cross multiply
    392,392.54x = 541,491.51 × 229,080.34
  4. Step 4: Simplify right side
    392,392.54x = 124,045,059,217.91
  5. Step 5: Solve for x
    x = 124,045,059,217.91/392,392.54
  6. Step 6: Final answer
    x = 316,124.92

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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.