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Finding the Fourth Proportional to 230,381.64, 345,728.08 and 80,623.23

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Solution

The fourth proportional to 230,381.64, 345,728.08 and 80,623.23 is: 120,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,381.64 : 345,728.08 = 80,623.23 : x
  2. Step 2: Convert to fraction form
    230,381.64/345,728.08 = 80,623.23/x
  3. Step 3: Cross multiply
    230,381.64x = 345,728.08 × 80,623.23
  4. Step 4: Simplify right side
    230,381.64x = 27,873,713,315.60
  5. Step 5: Solve for x
    x = 27,873,713,315.60/230,381.64
  6. Step 6: Final answer
    x = 120,989.30

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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.