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Finding the Fourth Proportional to 200,521.20, 300,858.60 and 197,372.40

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Solution

The fourth proportional to 200,521.20, 300,858.60 and 197,372.40 is: 296,134.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,521.20 : 300,858.60 = 197,372.40 : x
  2. Step 2: Convert to fraction form
    200,521.20/300,858.60 = 197,372.40/x
  3. Step 3: Cross multiply
    200,521.20x = 300,858.60 × 197,372.40
  4. Step 4: Simplify right side
    200,521.20x = 59,381,183,942.64
  5. Step 5: Solve for x
    x = 59,381,183,942.64/200,521.20
  6. Step 6: Final answer
    x = 296,134.19

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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.