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Finding the Fourth Proportional to 350,984.34, 484,358.43 and 189,839.40

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Solution

The fourth proportional to 350,984.34, 484,358.43 and 189,839.40 is: 261,978.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,984.34 : 484,358.43 = 189,839.40 : x
  2. Step 2: Convert to fraction form
    350,984.34/484,358.43 = 189,839.40/x
  3. Step 3: Cross multiply
    350,984.34x = 484,358.43 × 189,839.40
  4. Step 4: Simplify right side
    350,984.34x = 91,950,313,736.14
  5. Step 5: Solve for x
    x = 91,950,313,736.14/350,984.34
  6. Step 6: Final answer
    x = 261,978.39

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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.