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Finding the Fourth Proportional to 276,864.60, 415,037.70 and 216,859.80

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Solution

The fourth proportional to 276,864.60, 415,037.70 and 216,859.80 is: 325,086.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,864.60 : 415,037.70 = 216,859.80 : x
  2. Step 2: Convert to fraction form
    276,864.60/415,037.70 = 216,859.80/x
  3. Step 3: Cross multiply
    276,864.60x = 415,037.70 × 216,859.80
  4. Step 4: Simplify right side
    276,864.60x = 90,004,992,614.46
  5. Step 5: Solve for x
    x = 90,004,992,614.46/276,864.60
  6. Step 6: Final answer
    x = 325,086.68

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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.