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Finding the Fourth Proportional to 426,153.60, 638,787.60 and 173,325.60

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Solution

The fourth proportional to 426,153.60, 638,787.60 and 173,325.60 is: 259,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,153.60 : 638,787.60 = 173,325.60 : x
  2. Step 2: Convert to fraction form
    426,153.60/638,787.60 = 173,325.60/x
  3. Step 3: Cross multiply
    426,153.60x = 638,787.60 × 173,325.60
  4. Step 4: Simplify right side
    426,153.60x = 110,718,244,042.56
  5. Step 5: Solve for x
    x = 110,718,244,042.56/426,153.60
  6. Step 6: Final answer
    x = 259,808.30

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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.