Home / 256,536.46-354,020.79-143,359.21

Finding the Fourth Proportional to 256,536.46, 354,020.79 and 143,359.21

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Solution

The fourth proportional to 256,536.46, 354,020.79 and 143,359.21 is: 197,835.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,536.46 : 354,020.79 = 143,359.21 : x
  2. Step 2: Convert to fraction form
    256,536.46/354,020.79 = 143,359.21/x
  3. Step 3: Cross multiply
    256,536.46x = 354,020.79 × 143,359.21
  4. Step 4: Simplify right side
    256,536.46x = 50,752,140,777.98
  5. Step 5: Solve for x
    x = 50,752,140,777.98/256,536.46
  6. Step 6: Final answer
    x = 197,835.98

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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.