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Finding the Fourth Proportional to 455,074.40, 682,028.40 and 217,906.40

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Solution

The fourth proportional to 455,074.40, 682,028.40 and 217,906.40 is: 326,580.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,074.40 : 682,028.40 = 217,906.40 : x
  2. Step 2: Convert to fraction form
    455,074.40/682,028.40 = 217,906.40/x
  3. Step 3: Cross multiply
    455,074.40x = 682,028.40 × 217,906.40
  4. Step 4: Simplify right side
    455,074.40x = 148,618,353,341.76
  5. Step 5: Solve for x
    x = 148,618,353,341.76/455,074.40
  6. Step 6: Final answer
    x = 326,580.34

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1.5x scale

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.