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Finding the Fourth Proportional to 251,871.06, 377,806.22 and 172,745.40

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Solution

The fourth proportional to 251,871.06, 377,806.22 and 172,745.40 is: 259,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,871.06 : 377,806.22 = 172,745.40 : x
  2. Step 2: Convert to fraction form
    251,871.06/377,806.22 = 172,745.40/x
  3. Step 3: Cross multiply
    251,871.06x = 377,806.22 × 172,745.40
  4. Step 4: Simplify right side
    251,871.06x = 65,264,286,596.39
  5. Step 5: Solve for x
    x = 65,264,286,596.39/251,871.06
  6. Step 6: Final answer
    x = 259,117.85

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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.