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Finding the Fourth Proportional to 291,111.63, 436,667.44 and 80,749.56

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Solution

The fourth proportional to 291,111.63, 436,667.44 and 80,749.56 is: 121,124.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,111.63 : 436,667.44 = 80,749.56 : x
  2. Step 2: Convert to fraction form
    291,111.63/436,667.44 = 80,749.56/x
  3. Step 3: Cross multiply
    291,111.63x = 436,667.44 × 80,749.56
  4. Step 4: Simplify right side
    291,111.63x = 35,260,703,646.33
  5. Step 5: Solve for x
    x = 35,260,703,646.33/291,111.63
  6. Step 6: Final answer
    x = 121,124.34

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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.