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Finding the Fourth Proportional to 270,366.56, 405,668.39 and 128,314.43

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Solution

The fourth proportional to 270,366.56, 405,668.39 and 128,314.43 is: 192,527.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,366.56 : 405,668.39 = 128,314.43 : x
  2. Step 2: Convert to fraction form
    270,366.56/405,668.39 = 128,314.43/x
  3. Step 3: Cross multiply
    270,366.56x = 405,668.39 × 128,314.43
  4. Step 4: Simplify right side
    270,366.56x = 52,053,105,561.95
  5. Step 5: Solve for x
    x = 52,053,105,561.95/270,366.56
  6. Step 6: Final answer
    x = 192,527.90

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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.