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Finding the Fourth Proportional to 483,108.72, 666,772.01 and 279,277.80

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Solution

The fourth proportional to 483,108.72, 666,772.01 and 279,277.80 is: 385,450.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,108.72 : 666,772.01 = 279,277.80 : x
  2. Step 2: Convert to fraction form
    483,108.72/666,772.01 = 279,277.80/x
  3. Step 3: Cross multiply
    483,108.72x = 666,772.01 × 279,277.80
  4. Step 4: Simplify right side
    483,108.72x = 186,214,620,054.38
  5. Step 5: Solve for x
    x = 186,214,620,054.38/483,108.72
  6. Step 6: Final answer
    x = 385,450.75

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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.