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Finding the Fourth Proportional to 381,188.72, 571,061.36 and 254,446.80

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Solution

The fourth proportional to 381,188.72, 571,061.36 and 254,446.80 is: 381,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,188.72 : 571,061.36 = 254,446.80 : x
  2. Step 2: Convert to fraction form
    381,188.72/571,061.36 = 254,446.80/x
  3. Step 3: Cross multiply
    381,188.72x = 571,061.36 × 254,446.80
  4. Step 4: Simplify right side
    381,188.72x = 145,304,734,383.41
  5. Step 5: Solve for x
    x = 145,304,734,383.41/381,188.72
  6. Step 6: Final answer
    x = 381,188.45

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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.