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Finding the Fourth Proportional to 324,313.20, 485,157.60 and 284,947.20

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Solution

The fourth proportional to 324,313.20, 485,157.60 and 284,947.20 is: 426,267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,313.20 : 485,157.60 = 284,947.20 : x
  2. Step 2: Convert to fraction form
    324,313.20/485,157.60 = 284,947.20/x
  3. Step 3: Cross multiply
    324,313.20x = 485,157.60 × 284,947.20
  4. Step 4: Simplify right side
    324,313.20x = 138,244,299,678.72
  5. Step 5: Solve for x
    x = 138,244,299,678.72/324,313.20
  6. Step 6: Final answer
    x = 426,267.88

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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.