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Finding the Fourth Proportional to 371,427.72, 512,564.98 and 201,668.36

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Solution

The fourth proportional to 371,427.72, 512,564.98 and 201,668.36 is: 278,299.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,427.72 : 512,564.98 = 201,668.36 : x
  2. Step 2: Convert to fraction form
    371,427.72/512,564.98 = 201,668.36/x
  3. Step 3: Cross multiply
    371,427.72x = 512,564.98 × 201,668.36
  4. Step 4: Simplify right side
    371,427.72x = 103,368,138,910.03
  5. Step 5: Solve for x
    x = 103,368,138,910.03/371,427.72
  6. Step 6: Final answer
    x = 278,299.47

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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.