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Finding the Fourth Proportional to 455,709.92, 628,877.66 and 251,760.88

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Solution

The fourth proportional to 455,709.92, 628,877.66 and 251,760.88 is: 347,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,709.92 : 628,877.66 = 251,760.88 : x
  2. Step 2: Convert to fraction form
    455,709.92/628,877.66 = 251,760.88/x
  3. Step 3: Cross multiply
    455,709.92x = 628,877.66 × 251,760.88
  4. Step 4: Simplify right side
    455,709.92x = 158,326,790,262.94
  5. Step 5: Solve for x
    x = 158,326,790,262.94/455,709.92
  6. Step 6: Final answer
    x = 347,428.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.