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Finding the Fourth Proportional to 269,732.21, 372,242.59 and 155,048.09

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Solution

The fourth proportional to 269,732.21, 372,242.59 and 155,048.09 is: 213,973.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,732.21 : 372,242.59 = 155,048.09 : x
  2. Step 2: Convert to fraction form
    269,732.21/372,242.59 = 155,048.09/x
  3. Step 3: Cross multiply
    269,732.21x = 372,242.59 × 155,048.09
  4. Step 4: Simplify right side
    269,732.21x = 57,715,500,347.32
  5. Step 5: Solve for x
    x = 57,715,500,347.32/269,732.21
  6. Step 6: Final answer
    x = 213,973.34

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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.