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Finding the Fourth Proportional to 255,728.64, 353,056.72 and 227,355.80

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Solution

The fourth proportional to 255,728.64, 353,056.72 and 227,355.80 is: 313,885.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,728.64 : 353,056.72 = 227,355.80 : x
  2. Step 2: Convert to fraction form
    255,728.64/353,056.72 = 227,355.80/x
  3. Step 3: Cross multiply
    255,728.64x = 353,056.72 × 227,355.80
  4. Step 4: Simplify right side
    255,728.64x = 80,269,493,020.98
  5. Step 5: Solve for x
    x = 80,269,493,020.98/255,728.64
  6. Step 6: Final answer
    x = 313,885.43

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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.