Home / 256,738.46-354,315.42-143,561.18

Finding the Fourth Proportional to 256,738.46, 354,315.42 and 143,561.18

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Solution

The fourth proportional to 256,738.46, 354,315.42 and 143,561.18 is: 198,123.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,738.46 : 354,315.42 = 143,561.18 : x
  2. Step 2: Convert to fraction form
    256,738.46/354,315.42 = 143,561.18/x
  3. Step 3: Cross multiply
    256,738.46x = 354,315.42 × 143,561.18
  4. Step 4: Simplify right side
    256,738.46x = 50,865,939,787.40
  5. Step 5: Solve for x
    x = 50,865,939,787.40/256,738.46
  6. Step 6: Final answer
    x = 198,123.57

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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.