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Finding the Fourth Proportional to 483,108.97, 666,772.36 and 279,278.05

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Solution

The fourth proportional to 483,108.97, 666,772.36 and 279,278.05 is: 385,451.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,108.97 : 666,772.36 = 279,278.05 : x
  2. Step 2: Convert to fraction form
    483,108.97/666,772.36 = 279,278.05/x
  3. Step 3: Cross multiply
    483,108.97x = 666,772.36 × 279,278.05
  4. Step 4: Simplify right side
    483,108.97x = 186,214,883,098.31
  5. Step 5: Solve for x
    x = 186,214,883,098.31/483,108.97
  6. Step 6: Final answer
    x = 385,451.10

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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.