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Finding the Fourth Proportional to 245,890.80, 368,836.20 and 214,786.80

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Solution

The fourth proportional to 245,890.80, 368,836.20 and 214,786.80 is: 322,180.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,890.80 : 368,836.20 = 214,786.80 : x
  2. Step 2: Convert to fraction form
    245,890.80/368,836.20 = 214,786.80/x
  3. Step 3: Cross multiply
    245,890.80x = 368,836.20 × 214,786.80
  4. Step 4: Simplify right side
    245,890.80x = 79,221,147,122.16
  5. Step 5: Solve for x
    x = 79,221,147,122.16/245,890.80
  6. Step 6: Final answer
    x = 322,180.20

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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.