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Finding the Fourth Proportional to 270,230.28, 405,403.40 and 80,705.60

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Solution

The fourth proportional to 270,230.28, 405,403.40 and 80,705.60 is: 121,075.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,230.28 : 405,403.40 = 80,705.60 : x
  2. Step 2: Convert to fraction form
    270,230.28/405,403.40 = 80,705.60/x
  3. Step 3: Cross multiply
    270,230.28x = 405,403.40 × 80,705.60
  4. Step 4: Simplify right side
    270,230.28x = 32,718,324,639.04
  5. Step 5: Solve for x
    x = 32,718,324,639.04/270,230.28
  6. Step 6: Final answer
    x = 121,075.72

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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.