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Finding the Fourth Proportional to 291,039.73, 436,559.72 and 130,928.65

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Solution

The fourth proportional to 291,039.73, 436,559.72 and 130,928.65 is: 196,393.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,039.73 : 436,559.72 = 130,928.65 : x
  2. Step 2: Convert to fraction form
    291,039.73/436,559.72 = 130,928.65/x
  3. Step 3: Cross multiply
    291,039.73x = 436,559.72 × 130,928.65
  4. Step 4: Simplify right side
    291,039.73x = 57,158,173,037.94
  5. Step 5: Solve for x
    x = 57,158,173,037.94/291,039.73
  6. Step 6: Final answer
    x = 196,393.03

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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.