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Finding the Fourth Proportional to 276,658, 415,091.60 and 108,298.64

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Solution

The fourth proportional to 276,658, 415,091.60 and 108,298.64 is: 162,488.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,658 : 415,091.60 = 108,298.64 : x
  2. Step 2: Convert to fraction form
    276,658/415,091.60 = 108,298.64/x
  3. Step 3: Cross multiply
    276,658x = 415,091.60 × 108,298.64
  4. Step 4: Simplify right side
    276,658x = 44,953,855,755.42
  5. Step 5: Solve for x
    x = 44,953,855,755.42/276,658
  6. Step 6: Final answer
    x = 162,488.91

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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.