Home / 256,774.27-385,326.65-138,527.23

Finding the Fourth Proportional to 256,774.27, 385,326.65 and 138,527.23

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Solution

The fourth proportional to 256,774.27, 385,326.65 and 138,527.23 is: 207,879.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,774.27 : 385,326.65 = 138,527.23 : x
  2. Step 2: Convert to fraction form
    256,774.27/385,326.65 = 138,527.23/x
  3. Step 3: Cross multiply
    256,774.27x = 385,326.65 × 138,527.23
  4. Step 4: Simplify right side
    256,774.27x = 53,378,233,469.68
  5. Step 5: Solve for x
    x = 53,378,233,469.68/256,774.27
  6. Step 6: Final answer
    x = 207,879.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.