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Finding the Fourth Proportional to 455,118.33, 628,062 and 251,167.77

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Solution

The fourth proportional to 455,118.33, 628,062 and 251,167.77 is: 346,610.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,118.33 : 628,062 = 251,167.77 : x
  2. Step 2: Convert to fraction form
    455,118.33/628,062 = 251,167.77/x
  3. Step 3: Cross multiply
    455,118.33x = 628,062 × 251,167.77
  4. Step 4: Simplify right side
    455,118.33x = 157,748,931,961.74
  5. Step 5: Solve for x
    x = 157,748,931,961.74/455,118.33
  6. Step 6: Final answer
    x = 346,610.81

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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.