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Finding the Fourth Proportional to 455,772.42, 628,933.61 and 251,821.10

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Solution

The fourth proportional to 455,772.42, 628,933.61 and 251,821.10 is: 347,495.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,772.42 : 628,933.61 = 251,821.10 : x
  2. Step 2: Convert to fraction form
    455,772.42/628,933.61 = 251,821.10/x
  3. Step 3: Cross multiply
    455,772.42x = 628,933.61 × 251,821.10
  4. Step 4: Simplify right side
    455,772.42x = 158,378,755,699.06
  5. Step 5: Solve for x
    x = 158,378,755,699.06/455,772.42
  6. Step 6: Final answer
    x = 347,495.26

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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.