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Finding the Fourth Proportional to 291,039.39, 436,559.20 and 130,928.30

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Solution

The fourth proportional to 291,039.39, 436,559.20 and 130,928.30 is: 196,392.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,039.39 : 436,559.20 = 130,928.30 : x
  2. Step 2: Convert to fraction form
    291,039.39/436,559.20 = 130,928.30/x
  3. Step 3: Cross multiply
    291,039.39x = 436,559.20 × 130,928.30
  4. Step 4: Simplify right side
    291,039.39x = 57,157,954,669.44
  5. Step 5: Solve for x
    x = 57,157,954,669.44/291,039.39
  6. Step 6: Final answer
    x = 196,392.50

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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.