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Finding the Fourth Proportional to 308,619.79, 462,882.90 and 83,997.72

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Solution

The fourth proportional to 308,619.79, 462,882.90 and 83,997.72 is: 125,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,619.79 : 462,882.90 = 83,997.72 : x
  2. Step 2: Convert to fraction form
    308,619.79/462,882.90 = 83,997.72/x
  3. Step 3: Cross multiply
    308,619.79x = 462,882.90 × 83,997.72
  4. Step 4: Simplify right side
    308,619.79x = 38,881,108,226.99
  5. Step 5: Solve for x
    x = 38,881,108,226.99/308,619.79
  6. Step 6: Final answer
    x = 125,983.85

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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.