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Finding the Fourth Proportional to 272,318.20, 407,894.10 and 219,830.20

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Solution

The fourth proportional to 272,318.20, 407,894.10 and 219,830.20 is: 329,274.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,318.20 : 407,894.10 = 219,830.20 : x
  2. Step 2: Convert to fraction form
    272,318.20/407,894.10 = 219,830.20/x
  3. Step 3: Cross multiply
    272,318.20x = 407,894.10 × 219,830.20
  4. Step 4: Simplify right side
    272,318.20x = 89,667,441,581.82
  5. Step 5: Solve for x
    x = 89,667,441,581.82/272,318.20
  6. Step 6: Final answer
    x = 329,274.51

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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.