Home / 256,516.12-353,990.10-143,338.96

Finding the Fourth Proportional to 256,516.12, 353,990.10 and 143,338.96

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Solution

The fourth proportional to 256,516.12, 353,990.10 and 143,338.96 is: 197,806.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,516.12 : 353,990.10 = 143,338.96 : x
  2. Step 2: Convert to fraction form
    256,516.12/353,990.10 = 143,338.96/x
  3. Step 3: Cross multiply
    256,516.12x = 353,990.10 × 143,338.96
  4. Step 4: Simplify right side
    256,516.12x = 50,740,572,784.30
  5. Step 5: Solve for x
    x = 50,740,572,784.30/256,516.12
  6. Step 6: Final answer
    x = 197,806.57

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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.