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Finding the Fourth Proportional to 300,321.20, 450,348.96 and 89,919.92

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Solution

The fourth proportional to 300,321.20, 450,348.96 and 89,919.92 is: 134,840.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,321.20 : 450,348.96 = 89,919.92 : x
  2. Step 2: Convert to fraction form
    300,321.20/450,348.96 = 89,919.92/x
  3. Step 3: Cross multiply
    300,321.20x = 450,348.96 × 89,919.92
  4. Step 4: Simplify right side
    300,321.20x = 40,495,342,455.28
  5. Step 5: Solve for x
    x = 40,495,342,455.28/300,321.20
  6. Step 6: Final answer
    x = 134,840.11

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1.5x scale

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.