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Finding the Fourth Proportional to 270,000.21, 372,593.15 and 149,138.90

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Solution

The fourth proportional to 270,000.21, 372,593.15 and 149,138.90 is: 205,807.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,000.21 : 372,593.15 = 149,138.90 : x
  2. Step 2: Convert to fraction form
    270,000.21/372,593.15 = 149,138.90/x
  3. Step 3: Cross multiply
    270,000.21x = 372,593.15 × 149,138.90
  4. Step 4: Simplify right side
    270,000.21x = 55,568,129,929.87
  5. Step 5: Solve for x
    x = 55,568,129,929.87/270,000.21
  6. Step 6: Final answer
    x = 205,807.73

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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.