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Finding the Fourth Proportional to 392,391.54, 541,490.13 and 229,079.34

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Solution

The fourth proportional to 392,391.54, 541,490.13 and 229,079.34 is: 316,123.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,391.54 : 541,490.13 = 229,079.34 : x
  2. Step 2: Convert to fraction form
    392,391.54/541,490.13 = 229,079.34/x
  3. Step 3: Cross multiply
    392,391.54x = 541,490.13 × 229,079.34
  4. Step 4: Simplify right side
    392,391.54x = 124,044,201,596.91
  5. Step 5: Solve for x
    x = 124,044,201,596.91/392,391.54
  6. Step 6: Final answer
    x = 316,123.54

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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.