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Finding the Fourth Proportional to 331,921.80, 497,882.70 and 219,728.70

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Solution

The fourth proportional to 331,921.80, 497,882.70 and 219,728.70 is: 329,593.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,921.80 : 497,882.70 = 219,728.70 : x
  2. Step 2: Convert to fraction form
    331,921.80/497,882.70 = 219,728.70/x
  3. Step 3: Cross multiply
    331,921.80x = 497,882.70 × 219,728.70
  4. Step 4: Simplify right side
    331,921.80x = 109,399,118,423.49
  5. Step 5: Solve for x
    x = 109,399,118,423.49/331,921.80
  6. Step 6: Final answer
    x = 329,593.05

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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.