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Finding the Fourth Proportional to 262,616.20, 393,809.10 and 104,792.20

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Solution

The fourth proportional to 262,616.20, 393,809.10 and 104,792.20 is: 157,142.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,616.20 : 393,809.10 = 104,792.20 : x
  2. Step 2: Convert to fraction form
    262,616.20/393,809.10 = 104,792.20/x
  3. Step 3: Cross multiply
    262,616.20x = 393,809.10 × 104,792.20
  4. Step 4: Simplify right side
    262,616.20x = 41,268,121,969.02
  5. Step 5: Solve for x
    x = 41,268,121,969.02/262,616.20
  6. Step 6: Final answer
    x = 157,142.33

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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.