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Finding the Fourth Proportional to 398,833.52, 550,291.83 and 243,745.25

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Solution

The fourth proportional to 398,833.52, 550,291.83 and 243,745.25 is: 336,308.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,833.52 : 550,291.83 = 243,745.25 : x
  2. Step 2: Convert to fraction form
    398,833.52/550,291.83 = 243,745.25/x
  3. Step 3: Cross multiply
    398,833.52x = 550,291.83 × 243,745.25
  4. Step 4: Simplify right side
    398,833.52x = 134,131,016,924.85
  5. Step 5: Solve for x
    x = 134,131,016,924.85/398,833.52
  6. Step 6: Final answer
    x = 336,308.29

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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.