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Finding the Fourth Proportional to 201,865.37, 278,580.52 and 115,840.13

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Solution

The fourth proportional to 201,865.37, 278,580.52 and 115,840.13 is: 159,862.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,865.37 : 278,580.52 = 115,840.13 : x
  2. Step 2: Convert to fraction form
    201,865.37/278,580.52 = 115,840.13/x
  3. Step 3: Cross multiply
    201,865.37x = 278,580.52 × 115,840.13
  4. Step 4: Simplify right side
    201,865.37x = 32,270,801,752.56
  5. Step 5: Solve for x
    x = 32,270,801,752.56/201,865.37
  6. Step 6: Final answer
    x = 159,862.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.