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Finding the Fourth Proportional to 201,603.33, 278,207.42 and 109,718.69

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Solution

The fourth proportional to 201,603.33, 278,207.42 and 109,718.69 is: 151,408.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,603.33 : 278,207.42 = 109,718.69 : x
  2. Step 2: Convert to fraction form
    201,603.33/278,207.42 = 109,718.69/x
  3. Step 3: Cross multiply
    201,603.33x = 278,207.42 × 109,718.69
  4. Step 4: Simplify right side
    201,603.33x = 30,524,551,731.05
  5. Step 5: Solve for x
    x = 30,524,551,731.05/201,603.33
  6. Step 6: Final answer
    x = 151,408.97

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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.