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Finding the Fourth Proportional to 425,815.93, 638,724 and 173,233.84

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Solution

The fourth proportional to 425,815.93, 638,724 and 173,233.84 is: 259,850.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,815.93 : 638,724 = 173,233.84 : x
  2. Step 2: Convert to fraction form
    425,815.93/638,724 = 173,233.84/x
  3. Step 3: Cross multiply
    425,815.93x = 638,724 × 173,233.84
  4. Step 4: Simplify right side
    425,815.93x = 110,648,611,220.16
  5. Step 5: Solve for x
    x = 110,648,611,220.16/425,815.93
  6. Step 6: Final answer
    x = 259,850.80

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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.