Home / 209,117.09-311,933.76-188,936.55

Finding the Fourth Proportional to 209,117.09, 311,933.76 and 188,936.55

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Solution

The fourth proportional to 209,117.09, 311,933.76 and 188,936.55 is: 281,831.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,117.09 : 311,933.76 = 188,936.55 : x
  2. Step 2: Convert to fraction form
    209,117.09/311,933.76 = 188,936.55/x
  3. Step 3: Cross multiply
    209,117.09x = 311,933.76 × 188,936.55
  4. Step 4: Simplify right side
    209,117.09x = 58,935,688,265.80
  5. Step 5: Solve for x
    x = 58,935,688,265.80/209,117.09
  6. Step 6: Final answer
    x = 281,831.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.