Home / 280,211.66-386,240.36-189,534.55

Finding the Fourth Proportional to 280,211.66, 386,240.36 and 189,534.55

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Solution

The fourth proportional to 280,211.66, 386,240.36 and 189,534.55 is: 261,252.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,211.66 : 386,240.36 = 189,534.55 : x
  2. Step 2: Convert to fraction form
    280,211.66/386,240.36 = 189,534.55/x
  3. Step 3: Cross multiply
    280,211.66x = 386,240.36 × 189,534.55
  4. Step 4: Simplify right side
    280,211.66x = 73,205,892,824.44
  5. Step 5: Solve for x
    x = 73,205,892,824.44/280,211.66
  6. Step 6: Final answer
    x = 261,252.13

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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.