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Finding the Fourth Proportional to 306,774.28, 423,318.18 and 179,425

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Solution

The fourth proportional to 306,774.28, 423,318.18 and 179,425 is: 247,588.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,774.28 : 423,318.18 = 179,425 : x
  2. Step 2: Convert to fraction form
    306,774.28/423,318.18 = 179,425/x
  3. Step 3: Cross multiply
    306,774.28x = 423,318.18 × 179,425
  4. Step 4: Simplify right side
    306,774.28x = 75,953,864,446.50
  5. Step 5: Solve for x
    x = 75,953,864,446.50/306,774.28
  6. Step 6: Final answer
    x = 247,588.76

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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.