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Finding the Fourth Proportional to 329,807.60, 494,905.80 and 217,811.60

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Solution

The fourth proportional to 329,807.60, 494,905.80 and 217,811.60 is: 326,845.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,807.60 : 494,905.80 = 217,811.60 : x
  2. Step 2: Convert to fraction form
    329,807.60/494,905.80 = 217,811.60/x
  3. Step 3: Cross multiply
    329,807.60x = 494,905.80 × 217,811.60
  4. Step 4: Simplify right side
    329,807.60x = 107,796,224,147.28
  5. Step 5: Solve for x
    x = 107,796,224,147.28/329,807.60
  6. Step 6: Final answer
    x = 326,845.79

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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.