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Finding the Fourth Proportional to 216,945.60, 325,418.40 and 111,969.60

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Solution

The fourth proportional to 216,945.60, 325,418.40 and 111,969.60 is: 167,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,945.60 : 325,418.40 = 111,969.60 : x
  2. Step 2: Convert to fraction form
    216,945.60/325,418.40 = 111,969.60/x
  3. Step 3: Cross multiply
    216,945.60x = 325,418.40 × 111,969.60
  4. Step 4: Simplify right side
    216,945.60x = 36,436,968,080.64
  5. Step 5: Solve for x
    x = 36,436,968,080.64/216,945.60
  6. Step 6: Final answer
    x = 167,954.40

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1.5x scale

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.