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Finding the Fourth Proportional to 230,019.45, 345,042.95 and 72,247.90

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Solution

The fourth proportional to 230,019.45, 345,042.95 and 72,247.90 is: 108,376.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,019.45 : 345,042.95 = 72,247.90 : x
  2. Step 2: Convert to fraction form
    230,019.45/345,042.95 = 72,247.90/x
  3. Step 3: Cross multiply
    230,019.45x = 345,042.95 × 72,247.90
  4. Step 4: Simplify right side
    230,019.45x = 24,928,628,478.41
  5. Step 5: Solve for x
    x = 24,928,628,478.41/230,019.45
  6. Step 6: Final answer
    x = 108,376.18

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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.