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Finding the Fourth Proportional to 201,391.18, 301,690.37 and 145,097.80

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Solution

The fourth proportional to 201,391.18, 301,690.37 and 145,097.80 is: 217,361.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,391.18 : 301,690.37 = 145,097.80 : x
  2. Step 2: Convert to fraction form
    201,391.18/301,690.37 = 145,097.80/x
  3. Step 3: Cross multiply
    201,391.18x = 301,690.37 × 145,097.80
  4. Step 4: Simplify right side
    201,391.18x = 43,774,608,576.70
  5. Step 5: Solve for x
    x = 43,774,608,576.70/201,391.18
  6. Step 6: Final answer
    x = 217,361.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.