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Finding the Fourth Proportional to 397,601.40, 548,682.37 and 220,785.88

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Solution

The fourth proportional to 397,601.40, 548,682.37 and 220,785.88 is: 304,680.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,601.40 : 548,682.37 = 220,785.88 : x
  2. Step 2: Convert to fraction form
    397,601.40/548,682.37 = 220,785.88/x
  3. Step 3: Cross multiply
    397,601.40x = 548,682.37 × 220,785.88
  4. Step 4: Simplify right side
    397,601.40x = 121,141,319,900.94
  5. Step 5: Solve for x
    x = 121,141,319,900.94/397,601.40
  6. Step 6: Final answer
    x = 304,680.32

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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.