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Finding the Fourth Proportional to 329,688.60, 494,532.90 and 217,422.60

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Solution

The fourth proportional to 329,688.60, 494,532.90 and 217,422.60 is: 326,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,688.60 : 494,532.90 = 217,422.60 : x
  2. Step 2: Convert to fraction form
    329,688.60/494,532.90 = 217,422.60/x
  3. Step 3: Cross multiply
    329,688.60x = 494,532.90 × 217,422.60
  4. Step 4: Simplify right side
    329,688.60x = 107,522,628,903.54
  5. Step 5: Solve for x
    x = 107,522,628,903.54/329,688.60
  6. Step 6: Final answer
    x = 326,133.90

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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.