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Finding the Fourth Proportional to 270,679.70, 405,981.15 and 83,710.10

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Solution

The fourth proportional to 270,679.70, 405,981.15 and 83,710.10 is: 125,553.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,679.70 : 405,981.15 = 83,710.10 : x
  2. Step 2: Convert to fraction form
    270,679.70/405,981.15 = 83,710.10/x
  3. Step 3: Cross multiply
    270,679.70x = 405,981.15 × 83,710.10
  4. Step 4: Simplify right side
    270,679.70x = 33,984,722,664.62
  5. Step 5: Solve for x
    x = 33,984,722,664.62/270,679.70
  6. Step 6: Final answer
    x = 125,553.27

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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.