Home / 264,443.20-396,081.60-139,638.40

Finding the Fourth Proportional to 264,443.20, 396,081.60 and 139,638.40

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Solution

The fourth proportional to 264,443.20, 396,081.60 and 139,638.40 is: 209,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,443.20 : 396,081.60 = 139,638.40 : x
  2. Step 2: Convert to fraction form
    264,443.20/396,081.60 = 139,638.40/x
  3. Step 3: Cross multiply
    264,443.20x = 396,081.60 × 139,638.40
  4. Step 4: Simplify right side
    264,443.20x = 55,308,200,893.44
  5. Step 5: Solve for x
    x = 55,308,200,893.44/264,443.20
  6. Step 6: Final answer
    x = 209,149.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.