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Finding the Fourth Proportional to 300,139.20, 450,079.20 and 150,321.60

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Solution

The fourth proportional to 300,139.20, 450,079.20 and 150,321.60 is: 225,417.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,139.20 : 450,079.20 = 150,321.60 : x
  2. Step 2: Convert to fraction form
    300,139.20/450,079.20 = 150,321.60/x
  3. Step 3: Cross multiply
    300,139.20x = 450,079.20 × 150,321.60
  4. Step 4: Simplify right side
    300,139.20x = 67,656,625,470.72
  5. Step 5: Solve for x
    x = 67,656,625,470.72/300,139.20
  6. Step 6: Final answer
    x = 225,417.49

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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.