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Finding the Fourth Proportional to 215,345.60, 322,629.60 and 201,348.80

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Solution

The fourth proportional to 215,345.60, 322,629.60 and 201,348.80 is: 301,659.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,345.60 : 322,629.60 = 201,348.80 : x
  2. Step 2: Convert to fraction form
    215,345.60/322,629.60 = 201,348.80/x
  3. Step 3: Cross multiply
    215,345.60x = 322,629.60 × 201,348.80
  4. Step 4: Simplify right side
    215,345.60x = 64,961,082,804.48
  5. Step 5: Solve for x
    x = 64,961,082,804.48/215,345.60
  6. Step 6: Final answer
    x = 301,659.67

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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.