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Finding the Fourth Proportional to 426,330.53, 638,940.48 and 173,315.48

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Solution

The fourth proportional to 426,330.53, 638,940.48 and 173,315.48 is: 259,747.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,330.53 : 638,940.48 = 173,315.48 : x
  2. Step 2: Convert to fraction form
    426,330.53/638,940.48 = 173,315.48/x
  3. Step 3: Cross multiply
    426,330.53x = 638,940.48 × 173,315.48
  4. Step 4: Simplify right side
    426,330.53x = 110,738,272,787.93
  5. Step 5: Solve for x
    x = 110,738,272,787.93/426,330.53
  6. Step 6: Final answer
    x = 259,747.46

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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.