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Finding the Fourth Proportional to 425,682.05, 638,504.57 and 105,827.22

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Solution

The fourth proportional to 425,682.05, 638,504.57 and 105,827.22 is: 158,736.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,682.05 : 638,504.57 = 105,827.22 : x
  2. Step 2: Convert to fraction form
    425,682.05/638,504.57 = 105,827.22/x
  3. Step 3: Cross multiply
    425,682.05x = 638,504.57 × 105,827.22
  4. Step 4: Simplify right side
    425,682.05x = 67,571,163,071.26
  5. Step 5: Solve for x
    x = 67,571,163,071.26/425,682.05
  6. Step 6: Final answer
    x = 158,736.23

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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.