Home / 219,986.90-303,586.21-143,554.89

Finding the Fourth Proportional to 219,986.90, 303,586.21 and 143,554.89

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Solution

The fourth proportional to 219,986.90, 303,586.21 and 143,554.89 is: 198,108.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,986.90 : 303,586.21 = 143,554.89 : x
  2. Step 2: Convert to fraction form
    219,986.90/303,586.21 = 143,554.89/x
  3. Step 3: Cross multiply
    219,986.90x = 303,586.21 × 143,554.89
  4. Step 4: Simplify right side
    219,986.90x = 43,581,284,623.18
  5. Step 5: Solve for x
    x = 43,581,284,623.18/219,986.90
  6. Step 6: Final answer
    x = 198,108.55

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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.