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Finding the Fourth Proportional to 455,651.61, 628,805.06 and 251,701.71

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Solution

The fourth proportional to 455,651.61, 628,805.06 and 251,701.71 is: 347,351.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,651.61 : 628,805.06 = 251,701.71 : x
  2. Step 2: Convert to fraction form
    455,651.61/628,805.06 = 251,701.71/x
  3. Step 3: Cross multiply
    455,651.61x = 628,805.06 × 251,701.71
  4. Step 4: Simplify right side
    455,651.61x = 158,271,308,858.65
  5. Step 5: Solve for x
    x = 158,271,308,858.65/455,651.61
  6. Step 6: Final answer
    x = 347,351.58

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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.