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Finding the Fourth Proportional to 276,611.60, 414,917.40 and 239,213.90

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Solution

The fourth proportional to 276,611.60, 414,917.40 and 239,213.90 is: 358,820.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,611.60 : 414,917.40 = 239,213.90 : x
  2. Step 2: Convert to fraction form
    276,611.60/414,917.40 = 239,213.90/x
  3. Step 3: Cross multiply
    276,611.60x = 414,917.40 × 239,213.90
  4. Step 4: Simplify right side
    276,611.60x = 99,254,009,431.86
  5. Step 5: Solve for x
    x = 99,254,009,431.86/276,611.60
  6. Step 6: Final answer
    x = 358,820.85

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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.