Home / 288,865.35-398,734.43-198,520.38

Finding the Fourth Proportional to 288,865.35, 398,734.43 and 198,520.38

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Solution

The fourth proportional to 288,865.35, 398,734.43 and 198,520.38 is: 274,027.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,865.35 : 398,734.43 = 198,520.38 : x
  2. Step 2: Convert to fraction form
    288,865.35/398,734.43 = 198,520.38/x
  3. Step 3: Cross multiply
    288,865.35x = 398,734.43 × 198,520.38
  4. Step 4: Simplify right side
    288,865.35x = 79,156,909,570.08
  5. Step 5: Solve for x
    x = 79,156,909,570.08/288,865.35
  6. Step 6: Final answer
    x = 274,027.01

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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.