Home / 280,185.10-386,685.22-171,353.10

Finding the Fourth Proportional to 280,185.10, 386,685.22 and 171,353.10

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Solution

The fourth proportional to 280,185.10, 386,685.22 and 171,353.10 is: 236,485.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,185.10 : 386,685.22 = 171,353.10 : x
  2. Step 2: Convert to fraction form
    280,185.10/386,685.22 = 171,353.10/x
  3. Step 3: Cross multiply
    280,185.10x = 386,685.22 × 171,353.10
  4. Step 4: Simplify right side
    280,185.10x = 66,259,711,171.18
  5. Step 5: Solve for x
    x = 66,259,711,171.18/280,185.10
  6. Step 6: Final answer
    x = 236,485.49

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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.