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Finding the Fourth Proportional to 263,400.90, 394,518.15 and 216,744.90

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Solution

The fourth proportional to 263,400.90, 394,518.15 and 216,744.90 is: 324,637.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,400.90 : 394,518.15 = 216,744.90 : x
  2. Step 2: Convert to fraction form
    263,400.90/394,518.15 = 216,744.90/x
  3. Step 3: Cross multiply
    263,400.90x = 394,518.15 × 216,744.90
  4. Step 4: Simplify right side
    263,400.90x = 85,509,796,969.94
  5. Step 5: Solve for x
    x = 85,509,796,969.94/263,400.90
  6. Step 6: Final answer
    x = 324,637.45

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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.