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Finding the Fourth Proportional to 216,945, 325,423.26 and 69,201

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Solution

The fourth proportional to 216,945, 325,423.26 and 69,201 is: 103,803.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,945 : 325,423.26 = 69,201 : x
  2. Step 2: Convert to fraction form
    216,945/325,423.26 = 69,201/x
  3. Step 3: Cross multiply
    216,945x = 325,423.26 × 69,201
  4. Step 4: Simplify right side
    216,945x = 22,519,615,015.26
  5. Step 5: Solve for x
    x = 22,519,615,015.26/216,945
  6. Step 6: Final answer
    x = 103,803.34

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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.