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Finding the Fourth Proportional to 300,372.60, 450,632.57 and 138,190.76

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Solution

The fourth proportional to 300,372.60, 450,632.57 and 138,190.76 is: 207,320.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,372.60 : 450,632.57 = 138,190.76 : x
  2. Step 2: Convert to fraction form
    300,372.60/450,632.57 = 138,190.76/x
  3. Step 3: Cross multiply
    300,372.60x = 450,632.57 × 138,190.76
  4. Step 4: Simplify right side
    300,372.60x = 62,273,256,074.81
  5. Step 5: Solve for x
    x = 62,273,256,074.81/300,372.60
  6. Step 6: Final answer
    x = 207,320.03

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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.