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Finding the Fourth Proportional to 455,652.80, 628,788.67 and 251,699.33

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Solution

The fourth proportional to 455,652.80, 628,788.67 and 251,699.33 is: 347,338.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,652.80 : 628,788.67 = 251,699.33 : x
  2. Step 2: Convert to fraction form
    455,652.80/628,788.67 = 251,699.33/x
  3. Step 3: Cross multiply
    455,652.80x = 628,788.67 × 251,699.33
  4. Step 4: Simplify right side
    455,652.80x = 158,265,686,656.42
  5. Step 5: Solve for x
    x = 158,265,686,656.42/455,652.80
  6. Step 6: Final answer
    x = 347,338.34

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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.