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Finding the Fourth Proportional to 216,684.79, 325,071.52 and 74,511.61

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Solution

The fourth proportional to 216,684.79, 325,071.52 and 74,511.61 is: 111,782.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,684.79 : 325,071.52 = 74,511.61 : x
  2. Step 2: Convert to fraction form
    216,684.79/325,071.52 = 74,511.61/x
  3. Step 3: Cross multiply
    216,684.79x = 325,071.52 × 74,511.61
  4. Step 4: Simplify right side
    216,684.79x = 24,221,601,740.52
  5. Step 5: Solve for x
    x = 24,221,601,740.52/216,684.79
  6. Step 6: Final answer
    x = 111,782.66

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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.