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Finding the Fourth Proportional to 481,912.09, 665,055.84 and 290,888.17

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Solution

The fourth proportional to 481,912.09, 665,055.84 and 290,888.17 is: 401,436.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,912.09 : 665,055.84 = 290,888.17 : x
  2. Step 2: Convert to fraction form
    481,912.09/665,055.84 = 290,888.17/x
  3. Step 3: Cross multiply
    481,912.09x = 665,055.84 × 290,888.17
  4. Step 4: Simplify right side
    481,912.09x = 193,456,876,245.41
  5. Step 5: Solve for x
    x = 193,456,876,245.41/481,912.09
  6. Step 6: Final answer
    x = 401,436.03

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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.