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Finding the Fourth Proportional to 230,426.80, 345,688.80 and 72,671.20

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Solution

The fourth proportional to 230,426.80, 345,688.80 and 72,671.20 is: 109,022.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,426.80 : 345,688.80 = 72,671.20 : x
  2. Step 2: Convert to fraction form
    230,426.80/345,688.80 = 72,671.20/x
  3. Step 3: Cross multiply
    230,426.80x = 345,688.80 × 72,671.20
  4. Step 4: Simplify right side
    230,426.80x = 25,121,619,922.56
  5. Step 5: Solve for x
    x = 25,121,619,922.56/230,426.80
  6. Step 6: Final answer
    x = 109,022.13

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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.