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Finding the Fourth Proportional to 483,703.49, 725,571.62 and 128,717.85

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Solution

The fourth proportional to 483,703.49, 725,571.62 and 128,717.85 is: 193,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,703.49 : 725,571.62 = 128,717.85 : x
  2. Step 2: Convert to fraction form
    483,703.49/725,571.62 = 128,717.85/x
  3. Step 3: Cross multiply
    483,703.49x = 725,571.62 × 128,717.85
  4. Step 4: Simplify right side
    483,703.49x = 93,394,018,303.83
  5. Step 5: Solve for x
    x = 93,394,018,303.83/483,703.49
  6. Step 6: Final answer
    x = 193,081.13

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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.