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Finding the Fourth Proportional to 425,754.96, 638,632.44 and 173,172.86

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Solution

The fourth proportional to 425,754.96, 638,632.44 and 173,172.86 is: 259,759.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,754.96 : 638,632.44 = 173,172.86 : x
  2. Step 2: Convert to fraction form
    425,754.96/638,632.44 = 173,172.86/x
  3. Step 3: Cross multiply
    425,754.96x = 638,632.44 × 173,172.86
  4. Step 4: Simplify right side
    425,754.96x = 110,593,807,720.16
  5. Step 5: Solve for x
    x = 110,593,807,720.16/425,754.96
  6. Step 6: Final answer
    x = 259,759.29

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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.