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Finding the Fourth Proportional to 371,402.69, 512,535.69 and 201,636.81

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Solution

The fourth proportional to 371,402.69, 512,535.69 and 201,636.81 is: 278,258.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,402.69 : 512,535.69 = 201,636.81 : x
  2. Step 2: Convert to fraction form
    371,402.69/512,535.69 = 201,636.81/x
  3. Step 3: Cross multiply
    371,402.69x = 512,535.69 × 201,636.81
  4. Step 4: Simplify right side
    371,402.69x = 103,346,061,542.75
  5. Step 5: Solve for x
    x = 103,346,061,542.75/371,402.69
  6. Step 6: Final answer
    x = 278,258.79

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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.