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Finding the Fourth Proportional to 230,705.28, 318,380.91 and 133,901.88

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Solution

The fourth proportional to 230,705.28, 318,380.91 and 133,901.88 is: 184,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,705.28 : 318,380.91 = 133,901.88 : x
  2. Step 2: Convert to fraction form
    230,705.28/318,380.91 = 133,901.88/x
  3. Step 3: Cross multiply
    230,705.28x = 318,380.91 × 133,901.88
  4. Step 4: Simplify right side
    230,705.28x = 42,631,802,405.11
  5. Step 5: Solve for x
    x = 42,631,802,405.11/230,705.28
  6. Step 6: Final answer
    x = 184,789.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.