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Finding the Fourth Proportional to 263,323.60, 394,985.40 and 168,845.20

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Solution

The fourth proportional to 263,323.60, 394,985.40 and 168,845.20 is: 253,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,323.60 : 394,985.40 = 168,845.20 : x
  2. Step 2: Convert to fraction form
    263,323.60/394,985.40 = 168,845.20/x
  3. Step 3: Cross multiply
    263,323.60x = 394,985.40 × 168,845.20
  4. Step 4: Simplify right side
    263,323.60x = 66,691,388,860.08
  5. Step 5: Solve for x
    x = 66,691,388,860.08/263,323.60
  6. Step 6: Final answer
    x = 253,267.80

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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.