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Finding the Fourth Proportional to 358,191.20, 494,327.46 and 212,958.20

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Solution

The fourth proportional to 358,191.20, 494,327.46 and 212,958.20 is: 293,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,191.20 : 494,327.46 = 212,958.20 : x
  2. Step 2: Convert to fraction form
    358,191.20/494,327.46 = 212,958.20/x
  3. Step 3: Cross multiply
    358,191.20x = 494,327.46 × 212,958.20
  4. Step 4: Simplify right side
    358,191.20x = 105,271,083,620.54
  5. Step 5: Solve for x
    x = 105,271,083,620.54/358,191.20
  6. Step 6: Final answer
    x = 293,896.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.