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Finding the Fourth Proportional to 291,039.27, 436,559.01 and 130,928.18

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Solution

The fourth proportional to 291,039.27, 436,559.01 and 130,928.18 is: 196,392.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,039.27 : 436,559.01 = 130,928.18 : x
  2. Step 2: Convert to fraction form
    291,039.27/436,559.01 = 130,928.18/x
  3. Step 3: Cross multiply
    291,039.27x = 436,559.01 × 130,928.18
  4. Step 4: Simplify right side
    291,039.27x = 57,157,876,641.90
  5. Step 5: Solve for x
    x = 57,157,876,641.90/291,039.27
  6. Step 6: Final answer
    x = 196,392.32

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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.