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Finding the Fourth Proportional to 272,346.64, 408,519.99 and 72,667.76

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Solution

The fourth proportional to 272,346.64, 408,519.99 and 72,667.76 is: 109,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,346.64 : 408,519.99 = 72,667.76 : x
  2. Step 2: Convert to fraction form
    272,346.64/408,519.99 = 72,667.76/x
  3. Step 3: Cross multiply
    272,346.64x = 408,519.99 × 72,667.76
  4. Step 4: Simplify right side
    272,346.64x = 29,686,233,428.15
  5. Step 5: Solve for x
    x = 29,686,233,428.15/272,346.64
  6. Step 6: Final answer
    x = 109,001.65

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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.