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Finding the Fourth Proportional to 201,647.20, 302,499.60 and 68,533.60

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Solution

The fourth proportional to 201,647.20, 302,499.60 and 68,533.60 is: 102,810.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,647.20 : 302,499.60 = 68,533.60 : x
  2. Step 2: Convert to fraction form
    201,647.20/302,499.60 = 68,533.60/x
  3. Step 3: Cross multiply
    201,647.20x = 302,499.60 × 68,533.60
  4. Step 4: Simplify right side
    201,647.20x = 20,731,386,586.56
  5. Step 5: Solve for x
    x = 20,731,386,586.56/201,647.20
  6. Step 6: Final answer
    x = 102,810.19

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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.