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Finding the Fourth Proportional to 217,089.20, 325,633.80 and 190,845.20

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Solution

The fourth proportional to 217,089.20, 325,633.80 and 190,845.20 is: 286,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,089.20 : 325,633.80 = 190,845.20 : x
  2. Step 2: Convert to fraction form
    217,089.20/325,633.80 = 190,845.20/x
  3. Step 3: Cross multiply
    217,089.20x = 325,633.80 × 190,845.20
  4. Step 4: Simplify right side
    217,089.20x = 62,145,647,687.76
  5. Step 5: Solve for x
    x = 62,145,647,687.76/217,089.20
  6. Step 6: Final answer
    x = 286,267.80

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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.