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Finding the Fourth Proportional to 276,639.60, 414,959.40 and 252,145.20

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Solution

The fourth proportional to 276,639.60, 414,959.40 and 252,145.20 is: 378,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,639.60 : 414,959.40 = 252,145.20 : x
  2. Step 2: Convert to fraction form
    276,639.60/414,959.40 = 252,145.20/x
  3. Step 3: Cross multiply
    276,639.60x = 414,959.40 × 252,145.20
  4. Step 4: Simplify right side
    276,639.60x = 104,630,020,904.88
  5. Step 5: Solve for x
    x = 104,630,020,904.88/276,639.60
  6. Step 6: Final answer
    x = 378,217.80

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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.