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Finding the Fourth Proportional to 425,522.72, 638,286.06 and 126,008.94

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Solution

The fourth proportional to 425,522.72, 638,286.06 and 126,008.94 is: 189,014.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,522.72 : 638,286.06 = 126,008.94 : x
  2. Step 2: Convert to fraction form
    425,522.72/638,286.06 = 126,008.94/x
  3. Step 3: Cross multiply
    425,522.72x = 638,286.06 × 126,008.94
  4. Step 4: Simplify right side
    425,522.72x = 80,429,749,837.38
  5. Step 5: Solve for x
    x = 80,429,749,837.38/425,522.72
  6. Step 6: Final answer
    x = 189,014.00

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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.