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Finding the Fourth Proportional to 276,684.40, 415,026.60 and 265,020.40

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Solution

The fourth proportional to 276,684.40, 415,026.60 and 265,020.40 is: 397,530.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,684.40 : 415,026.60 = 265,020.40 : x
  2. Step 2: Convert to fraction form
    276,684.40/415,026.60 = 265,020.40/x
  3. Step 3: Cross multiply
    276,684.40x = 415,026.60 × 265,020.40
  4. Step 4: Simplify right side
    276,684.40x = 109,990,515,542.64
  5. Step 5: Solve for x
    x = 109,990,515,542.64/276,684.40
  6. Step 6: Final answer
    x = 397,530.60

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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.