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Finding the Fourth Proportional to 350,905.36, 484,249.60 and 189,760.40

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Solution

The fourth proportional to 350,905.36, 484,249.60 and 189,760.40 is: 261,869.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,905.36 : 484,249.60 = 189,760.40 : x
  2. Step 2: Convert to fraction form
    350,905.36/484,249.60 = 189,760.40/x
  3. Step 3: Cross multiply
    350,905.36x = 484,249.60 × 189,760.40
  4. Step 4: Simplify right side
    350,905.36x = 91,891,395,374.59
  5. Step 5: Solve for x
    x = 91,891,395,374.59/350,905.36
  6. Step 6: Final answer
    x = 261,869.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.