Home / 280,299.20-386,805.60-152,976.32

Finding the Fourth Proportional to 280,299.20, 386,805.60 and 152,976.32

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Solution

The fourth proportional to 280,299.20, 386,805.60 and 152,976.32 is: 211,103.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,299.20 : 386,805.60 = 152,976.32 : x
  2. Step 2: Convert to fraction form
    280,299.20/386,805.60 = 152,976.32/x
  3. Step 3: Cross multiply
    280,299.20x = 386,805.60 × 152,976.32
  4. Step 4: Simplify right side
    280,299.20x = 59,172,097,243.39
  5. Step 5: Solve for x
    x = 59,172,097,243.39/280,299.20
  6. Step 6: Final answer
    x = 211,103.34

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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.