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Finding the Fourth Proportional to 262,904.40, 394,241.40 and 105,080.40

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Solution

The fourth proportional to 262,904.40, 394,241.40 and 105,080.40 is: 157,574.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,904.40 : 394,241.40 = 105,080.40 : x
  2. Step 2: Convert to fraction form
    262,904.40/394,241.40 = 105,080.40/x
  3. Step 3: Cross multiply
    262,904.40x = 394,241.40 × 105,080.40
  4. Step 4: Simplify right side
    262,904.40x = 41,427,044,008.56
  5. Step 5: Solve for x
    x = 41,427,044,008.56/262,904.40
  6. Step 6: Final answer
    x = 157,574.56

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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.