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Finding the Fourth Proportional to 207,355.80, 310,803.30 and 113,928.60

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Solution

The fourth proportional to 207,355.80, 310,803.30 and 113,928.60 is: 170,766.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,355.80 : 310,803.30 = 113,928.60 : x
  2. Step 2: Convert to fraction form
    207,355.80/310,803.30 = 113,928.60/x
  3. Step 3: Cross multiply
    207,355.80x = 310,803.30 × 113,928.60
  4. Step 4: Simplify right side
    207,355.80x = 35,409,384,844.38
  5. Step 5: Solve for x
    x = 35,409,384,844.38/207,355.80
  6. Step 6: Final answer
    x = 170,766.31

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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.