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Finding the Fourth Proportional to 276,672.70, 415,009.05 and 99,193.60

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Solution

The fourth proportional to 276,672.70, 415,009.05 and 99,193.60 is: 148,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,672.70 : 415,009.05 = 99,193.60 : x
  2. Step 2: Convert to fraction form
    276,672.70/415,009.05 = 99,193.60/x
  3. Step 3: Cross multiply
    276,672.70x = 415,009.05 × 99,193.60
  4. Step 4: Simplify right side
    276,672.70x = 41,166,241,702.08
  5. Step 5: Solve for x
    x = 41,166,241,702.08/276,672.70
  6. Step 6: Final answer
    x = 148,790.40

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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.