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Finding the Fourth Proportional to 455,752.38, 628,930.60 and 251,811.80

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Solution

The fourth proportional to 455,752.38, 628,930.60 and 251,811.80 is: 347,496.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,752.38 : 628,930.60 = 251,811.80 : x
  2. Step 2: Convert to fraction form
    455,752.38/628,930.60 = 251,811.80/x
  3. Step 3: Cross multiply
    455,752.38x = 628,930.60 × 251,811.80
  4. Step 4: Simplify right side
    455,752.38x = 158,372,146,461.08
  5. Step 5: Solve for x
    x = 158,372,146,461.08/455,752.38
  6. Step 6: Final answer
    x = 347,496.04

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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.