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Finding the Fourth Proportional to 455,798.28, 628,999.20 and 251,863.26

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Solution

The fourth proportional to 455,798.28, 628,999.20 and 251,863.26 is: 347,569.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,798.28 : 628,999.20 = 251,863.26 : x
  2. Step 2: Convert to fraction form
    455,798.28/628,999.20 = 251,863.26/x
  3. Step 3: Cross multiply
    455,798.28x = 628,999.20 × 251,863.26
  4. Step 4: Simplify right side
    455,798.28x = 158,421,789,049.39
  5. Step 5: Solve for x
    x = 158,421,789,049.39/455,798.28
  6. Step 6: Final answer
    x = 347,569.96

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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.