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Finding the Fourth Proportional to 276,627.50, 414,941.61 and 76,947.90

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Solution

The fourth proportional to 276,627.50, 414,941.61 and 76,947.90 is: 115,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,627.50 : 414,941.61 = 76,947.90 : x
  2. Step 2: Convert to fraction form
    276,627.50/414,941.61 = 76,947.90/x
  3. Step 3: Cross multiply
    276,627.50x = 414,941.61 × 76,947.90
  4. Step 4: Simplify right side
    276,627.50x = 31,928,885,512.12
  5. Step 5: Solve for x
    x = 31,928,885,512.12/276,627.50
  6. Step 6: Final answer
    x = 115,421.95

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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.