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Finding the Fourth Proportional to 216,730.26, 325,117.26 and 81,760.46

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Solution

The fourth proportional to 216,730.26, 325,117.26 and 81,760.46 is: 122,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,730.26 : 325,117.26 = 81,760.46 : x
  2. Step 2: Convert to fraction form
    216,730.26/325,117.26 = 81,760.46/x
  3. Step 3: Cross multiply
    216,730.26x = 325,117.26 × 81,760.46
  4. Step 4: Simplify right side
    216,730.26x = 26,581,736,731.54
  5. Step 5: Solve for x
    x = 26,581,736,731.54/216,730.26
  6. Step 6: Final answer
    x = 122,648.94

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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.