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Finding the Fourth Proportional to 268,450.80, 402,805.80 and 189,394.80

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Solution

The fourth proportional to 268,450.80, 402,805.80 and 189,394.80 is: 284,183.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,450.80 : 402,805.80 = 189,394.80 : x
  2. Step 2: Convert to fraction form
    268,450.80/402,805.80 = 189,394.80/x
  3. Step 3: Cross multiply
    268,450.80x = 402,805.80 × 189,394.80
  4. Step 4: Simplify right side
    268,450.80x = 76,289,323,929.84
  5. Step 5: Solve for x
    x = 76,289,323,929.84/268,450.80
  6. Step 6: Final answer
    x = 284,183.63

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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.