Home / 282,168.06-389,396.70-154,855.50

Finding the Fourth Proportional to 282,168.06, 389,396.70 and 154,855.50

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Solution

The fourth proportional to 282,168.06, 389,396.70 and 154,855.50 is: 213,703.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,168.06 : 389,396.70 = 154,855.50 : x
  2. Step 2: Convert to fraction form
    282,168.06/389,396.70 = 154,855.50/x
  3. Step 3: Cross multiply
    282,168.06x = 389,396.70 × 154,855.50
  4. Step 4: Simplify right side
    282,168.06x = 60,300,220,676.85
  5. Step 5: Solve for x
    x = 60,300,220,676.85/282,168.06
  6. Step 6: Final answer
    x = 213,703.21

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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.