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Finding the Fourth Proportional to 276,813.35, 415,220.01 and 66,451.29

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Solution

The fourth proportional to 276,813.35, 415,220.01 and 66,451.29 is: 99,676.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,813.35 : 415,220.01 = 66,451.29 : x
  2. Step 2: Convert to fraction form
    276,813.35/415,220.01 = 66,451.29/x
  3. Step 3: Cross multiply
    276,813.35x = 415,220.01 × 66,451.29
  4. Step 4: Simplify right side
    276,813.35x = 27,591,903,492.05
  5. Step 5: Solve for x
    x = 27,591,903,492.05/276,813.35
  6. Step 6: Final answer
    x = 99,676.93

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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.