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Finding the Fourth Proportional to 408,454.28, 563,623.72 and 227,136.89

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Solution

The fourth proportional to 408,454.28, 563,623.72 and 227,136.89 is: 313,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,454.28 : 563,623.72 = 227,136.89 : x
  2. Step 2: Convert to fraction form
    408,454.28/563,623.72 = 227,136.89/x
  3. Step 3: Cross multiply
    408,454.28x = 563,623.72 × 227,136.89
  4. Step 4: Simplify right side
    408,454.28x = 128,019,739,732.25
  5. Step 5: Solve for x
    x = 128,019,739,732.25/408,454.28
  6. Step 6: Final answer
    x = 313,424.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.