Home / 328,890.78-453,869.73-177,987.78

Finding the Fourth Proportional to 328,890.78, 453,869.73 and 177,987.78

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Solution

The fourth proportional to 328,890.78, 453,869.73 and 177,987.78 is: 245,623.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,890.78 : 453,869.73 = 177,987.78 : x
  2. Step 2: Convert to fraction form
    328,890.78/453,869.73 = 177,987.78/x
  3. Step 3: Cross multiply
    328,890.78x = 453,869.73 × 177,987.78
  4. Step 4: Simplify right side
    328,890.78x = 80,783,265,651.90
  5. Step 5: Solve for x
    x = 80,783,265,651.90/328,890.78
  6. Step 6: Final answer
    x = 245,623.38

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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.