Home / 280,940.28-387,697.68-153,616.92

Finding the Fourth Proportional to 280,940.28, 387,697.68 and 153,616.92

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Solution

The fourth proportional to 280,940.28, 387,697.68 and 153,616.92 is: 211,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,940.28 : 387,697.68 = 153,616.92 : x
  2. Step 2: Convert to fraction form
    280,940.28/387,697.68 = 153,616.92/x
  3. Step 3: Cross multiply
    280,940.28x = 387,697.68 × 153,616.92
  4. Step 4: Simplify right side
    280,940.28x = 59,556,923,492.75
  5. Step 5: Solve for x
    x = 59,556,923,492.75/280,940.28
  6. Step 6: Final answer
    x = 211,991.40

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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.