Home / 407,811.60-611,936.10-171,178.20

Finding the Fourth Proportional to 407,811.60, 611,936.10 and 171,178.20

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Solution

The fourth proportional to 407,811.60, 611,936.10 and 171,178.20 is: 256,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,811.60 : 611,936.10 = 171,178.20 : x
  2. Step 2: Convert to fraction form
    407,811.60/611,936.10 = 171,178.20/x
  3. Step 3: Cross multiply
    407,811.60x = 611,936.10 × 171,178.20
  4. Step 4: Simplify right side
    407,811.60x = 104,750,120,113.02
  5. Step 5: Solve for x
    x = 104,750,120,113.02/407,811.60
  6. Step 6: Final answer
    x = 256,859.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.