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Finding the Fourth Proportional to 483,107.72, 666,770.63 and 279,276.80

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Solution

The fourth proportional to 483,107.72, 666,770.63 and 279,276.80 is: 385,449.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,107.72 : 666,770.63 = 279,276.80 : x
  2. Step 2: Convert to fraction form
    483,107.72/666,770.63 = 279,276.80/x
  3. Step 3: Cross multiply
    483,107.72x = 666,770.63 × 279,276.80
  4. Step 4: Simplify right side
    483,107.72x = 186,213,563,150.15
  5. Step 5: Solve for x
    x = 186,213,563,150.15/483,107.72
  6. Step 6: Final answer
    x = 385,449.37

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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.