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Finding the Fourth Proportional to 204,545.52, 306,859.86 and 86,216.67

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Solution

The fourth proportional to 204,545.52, 306,859.86 and 86,216.67 is: 129,342.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,545.52 : 306,859.86 = 86,216.67 : x
  2. Step 2: Convert to fraction form
    204,545.52/306,859.86 = 86,216.67/x
  3. Step 3: Cross multiply
    204,545.52x = 306,859.86 × 86,216.67
  4. Step 4: Simplify right side
    204,545.52x = 26,456,435,285.87
  5. Step 5: Solve for x
    x = 26,456,435,285.87/204,545.52
  6. Step 6: Final answer
    x = 129,342.53

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1.5x scale

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.