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Finding the Fourth Proportional to 455,389.88, 628,390.32 and 264,365.96

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Solution

The fourth proportional to 455,389.88, 628,390.32 and 264,365.96 is: 364,797.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,389.88 : 628,390.32 = 264,365.96 : x
  2. Step 2: Convert to fraction form
    455,389.88/628,390.32 = 264,365.96/x
  3. Step 3: Cross multiply
    455,389.88x = 628,390.32 × 264,365.96
  4. Step 4: Simplify right side
    455,389.88x = 166,125,010,201.51
  5. Step 5: Solve for x
    x = 166,125,010,201.51/455,389.88
  6. Step 6: Final answer
    x = 364,797.33

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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.