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Finding the Fourth Proportional to 451,932.76, 678,008.58 and 136,370.44

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Solution

The fourth proportional to 451,932.76, 678,008.58 and 136,370.44 is: 204,588.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,932.76 : 678,008.58 = 136,370.44 : x
  2. Step 2: Convert to fraction form
    451,932.76/678,008.58 = 136,370.44/x
  3. Step 3: Cross multiply
    451,932.76x = 678,008.58 × 136,370.44
  4. Step 4: Simplify right side
    451,932.76x = 92,460,328,378.38
  5. Step 5: Solve for x
    x = 92,460,328,378.38/451,932.76
  6. Step 6: Final answer
    x = 204,588.68

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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.