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Finding the Fourth Proportional to 490,396.16, 676,727.86 and 275,545.28

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Solution

The fourth proportional to 490,396.16, 676,727.86 and 275,545.28 is: 380,241.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,396.16 : 676,727.86 = 275,545.28 : x
  2. Step 2: Convert to fraction form
    490,396.16/676,727.86 = 275,545.28/x
  3. Step 3: Cross multiply
    490,396.16x = 676,727.86 × 275,545.28
  4. Step 4: Simplify right side
    490,396.16x = 186,469,167,667.50
  5. Step 5: Solve for x
    x = 186,469,167,667.50/490,396.16
  6. Step 6: Final answer
    x = 380,241.90

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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.