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Finding the Fourth Proportional to 251,662, 377,551.36 and 85,450

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Solution

The fourth proportional to 251,662, 377,551.36 and 85,450 is: 128,194.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,662 : 377,551.36 = 85,450 : x
  2. Step 2: Convert to fraction form
    251,662/377,551.36 = 85,450/x
  3. Step 3: Cross multiply
    251,662x = 377,551.36 × 85,450
  4. Step 4: Simplify right side
    251,662x = 32,261,763,712
  5. Step 5: Solve for x
    x = 32,261,763,712/251,662
  6. Step 6: Final answer
    x = 128,194.82

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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.