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Finding the Fourth Proportional to 291,236.52, 436,485.42 and 131,141.64

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Solution

The fourth proportional to 291,236.52, 436,485.42 and 131,141.64 is: 196,546.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,236.52 : 436,485.42 = 131,141.64 : x
  2. Step 2: Convert to fraction form
    291,236.52/436,485.42 = 131,141.64/x
  3. Step 3: Cross multiply
    291,236.52x = 436,485.42 × 131,141.64
  4. Step 4: Simplify right side
    291,236.52x = 57,241,413,814.89
  5. Step 5: Solve for x
    x = 57,241,413,814.89/291,236.52
  6. Step 6: Final answer
    x = 196,546.14

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1.5x scale

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.