Home / 216,016.34-324,079.21-66,264.28

Finding the Fourth Proportional to 216,016.34, 324,079.21 and 66,264.28

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Solution

The fourth proportional to 216,016.34, 324,079.21 and 66,264.28 is: 99,413.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,016.34 : 324,079.21 = 66,264.28 : x
  2. Step 2: Convert to fraction form
    216,016.34/324,079.21 = 66,264.28/x
  3. Step 3: Cross multiply
    216,016.34x = 324,079.21 × 66,264.28
  4. Step 4: Simplify right side
    216,016.34x = 21,474,874,786.25
  5. Step 5: Solve for x
    x = 21,474,874,786.25/216,016.34
  6. Step 6: Final answer
    x = 99,413.20

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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.