Home / 256,499.07-353,967.96-143,321.91

Finding the Fourth Proportional to 256,499.07, 353,967.96 and 143,321.91

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Solution

The fourth proportional to 256,499.07, 353,967.96 and 143,321.91 is: 197,783.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,499.07 : 353,967.96 = 143,321.91 : x
  2. Step 2: Convert to fraction form
    256,499.07/353,967.96 = 143,321.91/x
  3. Step 3: Cross multiply
    256,499.07x = 353,967.96 × 143,321.91
  4. Step 4: Simplify right side
    256,499.07x = 50,731,364,106.00
  5. Step 5: Solve for x
    x = 50,731,364,106.00/256,499.07
  6. Step 6: Final answer
    x = 197,783.81

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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.