Home / 328,566.11-492,637.26-128,906.67

Finding the Fourth Proportional to 328,566.11, 492,637.26 and 128,906.67

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Solution

The fourth proportional to 328,566.11, 492,637.26 and 128,906.67 is: 193,276.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,566.11 : 492,637.26 = 128,906.67 : x
  2. Step 2: Convert to fraction form
    328,566.11/492,637.26 = 128,906.67/x
  3. Step 3: Cross multiply
    328,566.11x = 492,637.26 × 128,906.67
  4. Step 4: Simplify right side
    328,566.11x = 63,504,228,704.52
  5. Step 5: Solve for x
    x = 63,504,228,704.52/328,566.11
  6. Step 6: Final answer
    x = 193,276.87

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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.