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Finding the Fourth Proportional to 463,255, 639,291.90 and 251,287

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Solution

The fourth proportional to 463,255, 639,291.90 and 251,287 is: 346,776.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,255 : 639,291.90 = 251,287 : x
  2. Step 2: Convert to fraction form
    463,255/639,291.90 = 251,287/x
  3. Step 3: Cross multiply
    463,255x = 639,291.90 × 251,287
  4. Step 4: Simplify right side
    463,255x = 160,645,743,675.30
  5. Step 5: Solve for x
    x = 160,645,743,675.30/463,255
  6. Step 6: Final answer
    x = 346,776.06

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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.