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Finding the Fourth Proportional to 328,081.60, 491,733.60 and 170,228.80

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Solution

The fourth proportional to 328,081.60, 491,733.60 and 170,228.80 is: 255,141.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,081.60 : 491,733.60 = 170,228.80 : x
  2. Step 2: Convert to fraction form
    328,081.60/491,733.60 = 170,228.80/x
  3. Step 3: Cross multiply
    328,081.60x = 491,733.60 × 170,228.80
  4. Step 4: Simplify right side
    328,081.60x = 83,707,220,647.68
  5. Step 5: Solve for x
    x = 83,707,220,647.68/328,081.60
  6. Step 6: Final answer
    x = 255,141.47

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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.