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Finding the Fourth Proportional to 483,703.62, 725,571.81 and 128,717.98

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Solution

The fourth proportional to 483,703.62, 725,571.81 and 128,717.98 is: 193,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,703.62 : 725,571.81 = 128,717.98 : x
  2. Step 2: Convert to fraction form
    483,703.62/725,571.81 = 128,717.98/x
  3. Step 3: Cross multiply
    483,703.62x = 725,571.81 × 128,717.98
  4. Step 4: Simplify right side
    483,703.62x = 93,394,133,456.69
  5. Step 5: Solve for x
    x = 93,394,133,456.69/483,703.62
  6. Step 6: Final answer
    x = 193,081.32

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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.