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Finding the Fourth Proportional to 290,683.52, 436,025.49 and 80,321.66

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Solution

The fourth proportional to 290,683.52, 436,025.49 and 80,321.66 is: 120,482.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,683.52 : 436,025.49 = 80,321.66 : x
  2. Step 2: Convert to fraction form
    290,683.52/436,025.49 = 80,321.66/x
  3. Step 3: Cross multiply
    290,683.52x = 436,025.49 × 80,321.66
  4. Step 4: Simplify right side
    290,683.52x = 35,022,290,757.51
  5. Step 5: Solve for x
    x = 35,022,290,757.51/290,683.52
  6. Step 6: Final answer
    x = 120,482.55

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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.