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Finding the Fourth Proportional to 216,817.20, 325,128.60 and 98,427.60

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Solution

The fourth proportional to 216,817.20, 325,128.60 and 98,427.60 is: 147,597.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,817.20 : 325,128.60 = 98,427.60 : x
  2. Step 2: Convert to fraction form
    216,817.20/325,128.60 = 98,427.60/x
  3. Step 3: Cross multiply
    216,817.20x = 325,128.60 × 98,427.60
  4. Step 4: Simplify right side
    216,817.20x = 32,001,627,789.36
  5. Step 5: Solve for x
    x = 32,001,627,789.36/216,817.20
  6. Step 6: Final answer
    x = 147,597.27

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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.