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Finding the Fourth Proportional to 217,097.20, 325,645.80 and 154,111.60

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Solution

The fourth proportional to 217,097.20, 325,645.80 and 154,111.60 is: 231,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,097.20 : 325,645.80 = 154,111.60 : x
  2. Step 2: Convert to fraction form
    217,097.20/325,645.80 = 154,111.60/x
  3. Step 3: Cross multiply
    217,097.20x = 325,645.80 × 154,111.60
  4. Step 4: Simplify right side
    217,097.20x = 50,185,795,271.28
  5. Step 5: Solve for x
    x = 50,185,795,271.28/217,097.20
  6. Step 6: Final answer
    x = 231,167.40

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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.