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Finding the Fourth Proportional to 425,857.23, 638,785.82 and 110,314.13

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Solution

The fourth proportional to 425,857.23, 638,785.82 and 110,314.13 is: 165,471.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,857.23 : 638,785.82 = 110,314.13 : x
  2. Step 2: Convert to fraction form
    425,857.23/638,785.82 = 110,314.13/x
  3. Step 3: Cross multiply
    425,857.23x = 638,785.82 × 110,314.13
  4. Step 4: Simplify right side
    425,857.23x = 70,467,099,071.49
  5. Step 5: Solve for x
    x = 70,467,099,071.49/425,857.23
  6. Step 6: Final answer
    x = 165,471.18

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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.