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Finding the Fourth Proportional to 276,856.40, 415,745.40 and 152,286.80

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Solution

The fourth proportional to 276,856.40, 415,745.40 and 152,286.80 is: 228,683.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,856.40 : 415,745.40 = 152,286.80 : x
  2. Step 2: Convert to fraction form
    276,856.40/415,745.40 = 152,286.80/x
  3. Step 3: Cross multiply
    276,856.40x = 415,745.40 × 152,286.80
  4. Step 4: Simplify right side
    276,856.40x = 63,312,536,580.72
  5. Step 5: Solve for x
    x = 63,312,536,580.72/276,856.40
  6. Step 6: Final answer
    x = 228,683.67

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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.