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Finding the Fourth Proportional to 245,381.89, 368,072.94 and 76,915.33

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Solution

The fourth proportional to 245,381.89, 368,072.94 and 76,915.33 is: 115,373.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,381.89 : 368,072.94 = 76,915.33 : x
  2. Step 2: Convert to fraction form
    245,381.89/368,072.94 = 76,915.33/x
  3. Step 3: Cross multiply
    245,381.89x = 368,072.94 × 76,915.33
  4. Step 4: Simplify right side
    245,381.89x = 28,310,451,644.17
  5. Step 5: Solve for x
    x = 28,310,451,644.17/245,381.89
  6. Step 6: Final answer
    x = 115,373.03

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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.