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Finding the Fourth Proportional to 381,994.37, 572,635.43 and 129,098.03

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Solution

The fourth proportional to 381,994.37, 572,635.43 and 129,098.03 is: 193,526.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,994.37 : 572,635.43 = 129,098.03 : x
  2. Step 2: Convert to fraction form
    381,994.37/572,635.43 = 129,098.03/x
  3. Step 3: Cross multiply
    381,994.37x = 572,635.43 × 129,098.03
  4. Step 4: Simplify right side
    381,994.37x = 73,926,105,044.04
  5. Step 5: Solve for x
    x = 73,926,105,044.04/381,994.37
  6. Step 6: Final answer
    x = 193,526.69

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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.