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Finding the Fourth Proportional to 455,634.72, 628,773.40 and 251,699.64

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Solution

The fourth proportional to 455,634.72, 628,773.40 and 251,699.64 is: 347,344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,634.72 : 628,773.40 = 251,699.64 : x
  2. Step 2: Convert to fraction form
    455,634.72/628,773.40 = 251,699.64/x
  3. Step 3: Cross multiply
    455,634.72x = 628,773.40 × 251,699.64
  4. Step 4: Simplify right side
    455,634.72x = 158,262,038,421.58
  5. Step 5: Solve for x
    x = 158,262,038,421.58/455,634.72
  6. Step 6: Final answer
    x = 347,344.11

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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.