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Finding the Fourth Proportional to 329,715.60, 494,476.20 and 129,969.60

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Solution

The fourth proportional to 329,715.60, 494,476.20 and 129,969.60 is: 194,916.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,715.60 : 494,476.20 = 129,969.60 : x
  2. Step 2: Convert to fraction form
    329,715.60/494,476.20 = 129,969.60/x
  3. Step 3: Cross multiply
    329,715.60x = 494,476.20 × 129,969.60
  4. Step 4: Simplify right side
    329,715.60x = 64,266,873,923.52
  5. Step 5: Solve for x
    x = 64,266,873,923.52/329,715.60
  6. Step 6: Final answer
    x = 194,916.09

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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.