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Finding the Fourth Proportional to 381,811.40, 572,717.10 and 241,728.20

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Solution

The fourth proportional to 381,811.40, 572,717.10 and 241,728.20 is: 362,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,811.40 : 572,717.10 = 241,728.20 : x
  2. Step 2: Convert to fraction form
    381,811.40/572,717.10 = 241,728.20/x
  3. Step 3: Cross multiply
    381,811.40x = 572,717.10 × 241,728.20
  4. Step 4: Simplify right side
    381,811.40x = 138,441,873,692.22
  5. Step 5: Solve for x
    x = 138,441,873,692.22/381,811.40
  6. Step 6: Final answer
    x = 362,592.30

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Similar ratio
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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.