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Finding the Fourth Proportional to 371,394.64, 512,530.83 and 201,628.78

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Solution

The fourth proportional to 371,394.64, 512,530.83 and 201,628.78 is: 278,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,394.64 : 512,530.83 = 201,628.78 : x
  2. Step 2: Convert to fraction form
    371,394.64/512,530.83 = 201,628.78/x
  3. Step 3: Cross multiply
    371,394.64x = 512,530.83 × 201,628.78
  4. Step 4: Simplify right side
    371,394.64x = 103,340,965,965.29
  5. Step 5: Solve for x
    x = 103,340,965,965.29/371,394.64
  6. Step 6: Final answer
    x = 278,251.10

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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.