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Finding the Fourth Proportional to 262,933.40, 394,400.10 and 163,400.60

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Solution

The fourth proportional to 262,933.40, 394,400.10 and 163,400.60 is: 245,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,933.40 : 394,400.10 = 163,400.60 : x
  2. Step 2: Convert to fraction form
    262,933.40/394,400.10 = 163,400.60/x
  3. Step 3: Cross multiply
    262,933.40x = 394,400.10 × 163,400.60
  4. Step 4: Simplify right side
    262,933.40x = 64,445,212,980.06
  5. Step 5: Solve for x
    x = 64,445,212,980.06/262,933.40
  6. Step 6: Final answer
    x = 245,100.90

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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.