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Finding the Fourth Proportional to 272,936.79, 409,348.71 and 73,209.69

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Solution

The fourth proportional to 272,936.79, 409,348.71 and 73,209.69 is: 109,799.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,936.79 : 409,348.71 = 73,209.69 : x
  2. Step 2: Convert to fraction form
    272,936.79/409,348.71 = 73,209.69/x
  3. Step 3: Cross multiply
    272,936.79x = 409,348.71 × 73,209.69
  4. Step 4: Simplify right side
    272,936.79x = 29,968,292,161.00
  5. Step 5: Solve for x
    x = 29,968,292,161.00/272,936.79
  6. Step 6: Final answer
    x = 109,799.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.