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Finding the Fourth Proportional to 371,540.45, 512,706.70 and 201,774.17

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Solution

The fourth proportional to 371,540.45, 512,706.70 and 201,774.17 is: 278,437.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,540.45 : 512,706.70 = 201,774.17 : x
  2. Step 2: Convert to fraction form
    371,540.45/512,706.70 = 201,774.17/x
  3. Step 3: Cross multiply
    371,540.45x = 512,706.70 × 201,774.17
  4. Step 4: Simplify right side
    371,540.45x = 103,450,968,845.94
  5. Step 5: Solve for x
    x = 103,450,968,845.94/371,540.45
  6. Step 6: Final answer
    x = 278,437.97

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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.