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Finding the Fourth Proportional to 207,726.80, 311,687.40 and 107,999.60

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Solution

The fourth proportional to 207,726.80, 311,687.40 and 107,999.60 is: 162,049.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,726.80 : 311,687.40 = 107,999.60 : x
  2. Step 2: Convert to fraction form
    207,726.80/311,687.40 = 107,999.60/x
  3. Step 3: Cross multiply
    207,726.80x = 311,687.40 × 107,999.60
  4. Step 4: Simplify right side
    207,726.80x = 33,662,114,525.04
  5. Step 5: Solve for x
    x = 33,662,114,525.04/207,726.80
  6. Step 6: Final answer
    x = 162,049.94

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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.