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Finding the Fourth Proportional to 439,659.48, 659,267.46 and 313,227.48

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Solution

The fourth proportional to 439,659.48, 659,267.46 and 313,227.48 is: 469,683.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,659.48 : 659,267.46 = 313,227.48 : x
  2. Step 2: Convert to fraction form
    439,659.48/659,267.46 = 313,227.48/x
  3. Step 3: Cross multiply
    439,659.48x = 659,267.46 × 313,227.48
  4. Step 4: Simplify right side
    439,659.48x = 206,500,685,141.80
  5. Step 5: Solve for x
    x = 206,500,685,141.80/439,659.48
  6. Step 6: Final answer
    x = 469,683.23

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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.