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Finding the Fourth Proportional to 463,978.29, 640,259.73 and 272,954.79

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Solution

The fourth proportional to 463,978.29, 640,259.73 and 272,954.79 is: 376,659.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,978.29 : 640,259.73 = 272,954.79 : x
  2. Step 2: Convert to fraction form
    463,978.29/640,259.73 = 272,954.79/x
  3. Step 3: Cross multiply
    463,978.29x = 640,259.73 × 272,954.79
  4. Step 4: Simplify right side
    463,978.29x = 174,761,960,147.61
  5. Step 5: Solve for x
    x = 174,761,960,147.61/463,978.29
  6. Step 6: Final answer
    x = 376,659.78

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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.