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Finding the Fourth Proportional to 216,857.79, 325,308.78 and 74,684.57

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Solution

The fourth proportional to 216,857.79, 325,308.78 and 74,684.57 is: 112,034.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,857.79 : 325,308.78 = 74,684.57 : x
  2. Step 2: Convert to fraction form
    216,857.79/325,308.78 = 74,684.57/x
  3. Step 3: Cross multiply
    216,857.79x = 325,308.78 × 74,684.57
  4. Step 4: Simplify right side
    216,857.79x = 24,295,544,724.98
  5. Step 5: Solve for x
    x = 24,295,544,724.98/216,857.79
  6. Step 6: Final answer
    x = 112,034.46

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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.