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Finding the Fourth Proportional to 548,717.26, 756,974.06 and 355,187.40

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Solution

The fourth proportional to 548,717.26, 756,974.06 and 355,187.40 is: 489,993.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,717.26 : 756,974.06 = 355,187.40 : x
  2. Step 2: Convert to fraction form
    548,717.26/756,974.06 = 355,187.40/x
  3. Step 3: Cross multiply
    548,717.26x = 756,974.06 × 355,187.40
  4. Step 4: Simplify right side
    548,717.26x = 268,867,648,238.84
  5. Step 5: Solve for x
    x = 268,867,648,238.84/548,717.26
  6. Step 6: Final answer
    x = 489,993.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.