Home / 216,290.40-324,466.65-66,543.27

Finding the Fourth Proportional to 216,290.40, 324,466.65 and 66,543.27

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Solution

The fourth proportional to 216,290.40, 324,466.65 and 66,543.27 is: 99,824.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,290.40 : 324,466.65 = 66,543.27 : x
  2. Step 2: Convert to fraction form
    216,290.40/324,466.65 = 66,543.27/x
  3. Step 3: Cross multiply
    216,290.40x = 324,466.65 × 66,543.27
  4. Step 4: Simplify right side
    216,290.40x = 21,591,071,896.95
  5. Step 5: Solve for x
    x = 21,591,071,896.95/216,290.40
  6. Step 6: Final answer
    x = 99,824.46

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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.