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Finding the Fourth Proportional to 398,739.54, 550,261.48 and 226,658.62

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Solution

The fourth proportional to 398,739.54, 550,261.48 and 226,658.62 is: 312,789.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,739.54 : 550,261.48 = 226,658.62 : x
  2. Step 2: Convert to fraction form
    398,739.54/550,261.48 = 226,658.62/x
  3. Step 3: Cross multiply
    398,739.54x = 550,261.48 × 226,658.62
  4. Step 4: Simplify right side
    398,739.54x = 124,721,507,695.96
  5. Step 5: Solve for x
    x = 124,721,507,695.96/398,739.54
  6. Step 6: Final answer
    x = 312,789.42

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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.