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Finding the Fourth Proportional to 251,231.60, 376,847.40 and 85,019.60

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Solution

The fourth proportional to 251,231.60, 376,847.40 and 85,019.60 is: 127,529.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,231.60 : 376,847.40 = 85,019.60 : x
  2. Step 2: Convert to fraction form
    251,231.60/376,847.40 = 85,019.60/x
  3. Step 3: Cross multiply
    251,231.60x = 376,847.40 × 85,019.60
  4. Step 4: Simplify right side
    251,231.60x = 32,039,415,209.04
  5. Step 5: Solve for x
    x = 32,039,415,209.04/251,231.60
  6. Step 6: Final answer
    x = 127,529.40

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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.