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Finding the Fourth Proportional to 270,417.40, 405,636.22 and 80,880.24

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Solution

The fourth proportional to 270,417.40, 405,636.22 and 80,880.24 is: 121,323.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,417.40 : 405,636.22 = 80,880.24 : x
  2. Step 2: Convert to fraction form
    270,417.40/405,636.22 = 80,880.24/x
  3. Step 3: Cross multiply
    270,417.40x = 405,636.22 × 80,880.24
  4. Step 4: Simplify right side
    270,417.40x = 32,807,954,826.29
  5. Step 5: Solve for x
    x = 32,807,954,826.29/270,417.40
  6. Step 6: Final answer
    x = 121,323.39

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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.