Home / 256,821.62-354,394.59-143,622.50

Finding the Fourth Proportional to 256,821.62, 354,394.59 and 143,622.50

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Solution

The fourth proportional to 256,821.62, 354,394.59 and 143,622.50 is: 198,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,821.62 : 354,394.59 = 143,622.50 : x
  2. Step 2: Convert to fraction form
    256,821.62/354,394.59 = 143,622.50/x
  3. Step 3: Cross multiply
    256,821.62x = 354,394.59 × 143,622.50
  4. Step 4: Simplify right side
    256,821.62x = 50,899,037,002.28
  5. Step 5: Solve for x
    x = 50,899,037,002.28/256,821.62
  6. Step 6: Final answer
    x = 198,188.29

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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.