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Finding the Fourth Proportional to 276,863.60, 415,036.20 and 216,858.80

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Solution

The fourth proportional to 276,863.60, 415,036.20 and 216,858.80 is: 325,085.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,863.60 : 415,036.20 = 216,858.80 : x
  2. Step 2: Convert to fraction form
    276,863.60/415,036.20 = 216,858.80/x
  3. Step 3: Cross multiply
    276,863.60x = 415,036.20 × 216,858.80
  4. Step 4: Simplify right side
    276,863.60x = 90,004,252,288.56
  5. Step 5: Solve for x
    x = 90,004,252,288.56/276,863.60
  6. Step 6: Final answer
    x = 325,085.18

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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.