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Finding the Fourth Proportional to 235,273, 324,676.74 and 129,289

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Solution

The fourth proportional to 235,273, 324,676.74 and 129,289 is: 178,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,273 : 324,676.74 = 129,289 : x
  2. Step 2: Convert to fraction form
    235,273/324,676.74 = 129,289/x
  3. Step 3: Cross multiply
    235,273x = 324,676.74 × 129,289
  4. Step 4: Simplify right side
    235,273x = 41,977,131,037.86
  5. Step 5: Solve for x
    x = 41,977,131,037.86/235,273
  6. Step 6: Final answer
    x = 178,418.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.