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Finding the Fourth Proportional to 251,664, 377,554.36 and 85,452

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Solution

The fourth proportional to 251,664, 377,554.36 and 85,452 is: 128,197.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,664 : 377,554.36 = 85,452 : x
  2. Step 2: Convert to fraction form
    251,664/377,554.36 = 85,452/x
  3. Step 3: Cross multiply
    251,664x = 377,554.36 × 85,452
  4. Step 4: Simplify right side
    251,664x = 32,262,775,170.72
  5. Step 5: Solve for x
    x = 32,262,775,170.72/251,664
  6. Step 6: Final answer
    x = 128,197.82

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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.