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Finding the Fourth Proportional to 217,099.20, 325,648.80 and 190,855.20

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Solution

The fourth proportional to 217,099.20, 325,648.80 and 190,855.20 is: 286,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,099.20 : 325,648.80 = 190,855.20 : x
  2. Step 2: Convert to fraction form
    217,099.20/325,648.80 = 190,855.20/x
  3. Step 3: Cross multiply
    217,099.20x = 325,648.80 × 190,855.20
  4. Step 4: Simplify right side
    217,099.20x = 62,151,766,853.76
  5. Step 5: Solve for x
    x = 62,151,766,853.76/217,099.20
  6. Step 6: Final answer
    x = 286,282.80

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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.