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Finding the Fourth Proportional to 300,727.32, 451,090.80 and 280,798.30

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Solution

The fourth proportional to 300,727.32, 451,090.80 and 280,798.30 is: 421,197.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,727.32 : 451,090.80 = 280,798.30 : x
  2. Step 2: Convert to fraction form
    300,727.32/451,090.80 = 280,798.30/x
  3. Step 3: Cross multiply
    300,727.32x = 451,090.80 × 280,798.30
  4. Step 4: Simplify right side
    300,727.32x = 126,665,529,785.64
  5. Step 5: Solve for x
    x = 126,665,529,785.64/300,727.32
  6. Step 6: Final answer
    x = 421,197.28

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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.