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Finding the Fourth Proportional to 276,639.60, 414,959.40 and 156,573.30

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Solution

The fourth proportional to 276,639.60, 414,959.40 and 156,573.30 is: 234,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,639.60 : 414,959.40 = 156,573.30 : x
  2. Step 2: Convert to fraction form
    276,639.60/414,959.40 = 156,573.30/x
  3. Step 3: Cross multiply
    276,639.60x = 414,959.40 × 156,573.30
  4. Step 4: Simplify right side
    276,639.60x = 64,971,562,624.02
  5. Step 5: Solve for x
    x = 64,971,562,624.02/276,639.60
  6. Step 6: Final answer
    x = 234,859.95

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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.