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Finding the Fourth Proportional to 291,107.16, 436,660.56 and 130,995.90

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Solution

The fourth proportional to 291,107.16, 436,660.56 and 130,995.90 is: 196,493.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,107.16 : 436,660.56 = 130,995.90 : x
  2. Step 2: Convert to fraction form
    291,107.16/436,660.56 = 130,995.90/x
  3. Step 3: Cross multiply
    291,107.16x = 436,660.56 × 130,995.90
  4. Step 4: Simplify right side
    291,107.16x = 57,200,743,051.70
  5. Step 5: Solve for x
    x = 57,200,743,051.70/291,107.16
  6. Step 6: Final answer
    x = 196,493.77

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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.