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Finding the Fourth Proportional to 216,799.20, 325,101.60 and 98,409.60

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Solution

The fourth proportional to 216,799.20, 325,101.60 and 98,409.60 is: 147,570.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,799.20 : 325,101.60 = 98,409.60 : x
  2. Step 2: Convert to fraction form
    216,799.20/325,101.60 = 98,409.60/x
  3. Step 3: Cross multiply
    216,799.20x = 325,101.60 × 98,409.60
  4. Step 4: Simplify right side
    216,799.20x = 31,993,118,415.36
  5. Step 5: Solve for x
    x = 31,993,118,415.36/216,799.20
  6. Step 6: Final answer
    x = 147,570.28

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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.