Home / 289,219.14-399,019.77-188,442.18

Finding the Fourth Proportional to 289,219.14, 399,019.77 and 188,442.18

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Solution

The fourth proportional to 289,219.14, 399,019.77 and 188,442.18 is: 259,983.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,219.14 : 399,019.77 = 188,442.18 : x
  2. Step 2: Convert to fraction form
    289,219.14/399,019.77 = 188,442.18/x
  3. Step 3: Cross multiply
    289,219.14x = 399,019.77 × 188,442.18
  4. Step 4: Simplify right side
    289,219.14x = 75,192,155,321.90
  5. Step 5: Solve for x
    x = 75,192,155,321.90/289,219.14
  6. Step 6: Final answer
    x = 259,983.33

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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.