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Finding the Fourth Proportional to 211,286.40, 317,102.40 and 204,374.40

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Solution

The fourth proportional to 211,286.40, 317,102.40 and 204,374.40 is: 306,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,286.40 : 317,102.40 = 204,374.40 : x
  2. Step 2: Convert to fraction form
    211,286.40/317,102.40 = 204,374.40/x
  3. Step 3: Cross multiply
    211,286.40x = 317,102.40 × 204,374.40
  4. Step 4: Simplify right side
    211,286.40x = 64,807,612,738.56
  5. Step 5: Solve for x
    x = 64,807,612,738.56/211,286.40
  6. Step 6: Final answer
    x = 306,728.75

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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.