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Finding the Fourth Proportional to 371,122.64, 512,629.70 and 274,522.85

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Solution

The fourth proportional to 371,122.64, 512,629.70 and 274,522.85 is: 379,196.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,122.64 : 512,629.70 = 274,522.85 : x
  2. Step 2: Convert to fraction form
    371,122.64/512,629.70 = 274,522.85/x
  3. Step 3: Cross multiply
    371,122.64x = 512,629.70 × 274,522.85
  4. Step 4: Simplify right side
    371,122.64x = 140,728,564,225.24
  5. Step 5: Solve for x
    x = 140,728,564,225.24/371,122.64
  6. Step 6: Final answer
    x = 379,196.93

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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.