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Finding the Fourth Proportional to 371,287.54, 512,370.39 and 201,518.02

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Solution

The fourth proportional to 371,287.54, 512,370.39 and 201,518.02 is: 278,091.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,287.54 : 512,370.39 = 201,518.02 : x
  2. Step 2: Convert to fraction form
    371,287.54/512,370.39 = 201,518.02/x
  3. Step 3: Cross multiply
    371,287.54x = 512,370.39 × 201,518.02
  4. Step 4: Simplify right side
    371,287.54x = 103,251,866,499.43
  5. Step 5: Solve for x
    x = 103,251,866,499.43/371,287.54
  6. Step 6: Final answer
    x = 278,091.39

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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.