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Finding the Fourth Proportional to 398,779.44, 550,296.21 and 237,630.90

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Solution

The fourth proportional to 398,779.44, 550,296.21 and 237,630.90 is: 327,919.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,779.44 : 550,296.21 = 237,630.90 : x
  2. Step 2: Convert to fraction form
    398,779.44/550,296.21 = 237,630.90/x
  3. Step 3: Cross multiply
    398,779.44x = 550,296.21 × 237,630.90
  4. Step 4: Simplify right side
    398,779.44x = 130,767,383,648.89
  5. Step 5: Solve for x
    x = 130,767,383,648.89/398,779.44
  6. Step 6: Final answer
    x = 327,919.07

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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.