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Finding the Fourth Proportional to 371,736.66, 512,990.28 and 201,969.57

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Solution

The fourth proportional to 371,736.66, 512,990.28 and 201,969.57 is: 278,714.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,736.66 : 512,990.28 = 201,969.57 : x
  2. Step 2: Convert to fraction form
    371,736.66/512,990.28 = 201,969.57/x
  3. Step 3: Cross multiply
    371,736.66x = 512,990.28 × 201,969.57
  4. Step 4: Simplify right side
    371,736.66x = 103,608,426,265.78
  5. Step 5: Solve for x
    x = 103,608,426,265.78/371,736.66
  6. Step 6: Final answer
    x = 278,714.58

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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.