Home / 209,311.91-288,863.03-123,328.19

Finding the Fourth Proportional to 209,311.91, 288,863.03 and 123,328.19

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Solution

The fourth proportional to 209,311.91, 288,863.03 and 123,328.19 is: 170,200.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,311.91 : 288,863.03 = 123,328.19 : x
  2. Step 2: Convert to fraction form
    209,311.91/288,863.03 = 123,328.19/x
  3. Step 3: Cross multiply
    209,311.91x = 288,863.03 × 123,328.19
  4. Step 4: Simplify right side
    209,311.91x = 35,624,955,810.00
  5. Step 5: Solve for x
    x = 35,624,955,810.00/209,311.91
  6. Step 6: Final answer
    x = 170,200.33

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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.