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Finding the Fourth Proportional to 329,807.70, 494,711.55 and 215,646.30

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Solution

The fourth proportional to 329,807.70, 494,711.55 and 215,646.30 is: 323,469.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,807.70 : 494,711.55 = 215,646.30 : x
  2. Step 2: Convert to fraction form
    329,807.70/494,711.55 = 215,646.30/x
  3. Step 3: Cross multiply
    329,807.70x = 494,711.55 × 215,646.30
  4. Step 4: Simplify right side
    329,807.70x = 106,682,715,324.77
  5. Step 5: Solve for x
    x = 106,682,715,324.77/329,807.70
  6. Step 6: Final answer
    x = 323,469.45

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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.