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Finding the Fourth Proportional to 455,474.84, 628,548.14 and 251,520.69

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Solution

The fourth proportional to 455,474.84, 628,548.14 and 251,520.69 is: 347,094.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,474.84 : 628,548.14 = 251,520.69 : x
  2. Step 2: Convert to fraction form
    455,474.84/628,548.14 = 251,520.69/x
  3. Step 3: Cross multiply
    455,474.84x = 628,548.14 × 251,520.69
  4. Step 4: Simplify right side
    455,474.84x = 158,092,860,613.41
  5. Step 5: Solve for x
    x = 158,092,860,613.41/455,474.84
  6. Step 6: Final answer
    x = 347,094.61

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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.