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Finding the Fourth Proportional to 276,870.60, 415,046.70 and 216,865.80

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Solution

The fourth proportional to 276,870.60, 415,046.70 and 216,865.80 is: 325,095.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,870.60 : 415,046.70 = 216,865.80 : x
  2. Step 2: Convert to fraction form
    276,870.60/415,046.70 = 216,865.80/x
  3. Step 3: Cross multiply
    276,870.60x = 415,046.70 × 216,865.80
  4. Step 4: Simplify right side
    276,870.60x = 90,009,434,632.86
  5. Step 5: Solve for x
    x = 90,009,434,632.86/276,870.60
  6. Step 6: Final answer
    x = 325,095.68

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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.