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Finding the Fourth Proportional to 269,642.81, 372,118.93 and 154,958.36

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Solution

The fourth proportional to 269,642.81, 372,118.93 and 154,958.36 is: 213,849.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,642.81 : 372,118.93 = 154,958.36 : x
  2. Step 2: Convert to fraction form
    269,642.81/372,118.93 = 154,958.36/x
  3. Step 3: Cross multiply
    269,642.81x = 372,118.93 × 154,958.36
  4. Step 4: Simplify right side
    269,642.81x = 57,662,936,869.76
  5. Step 5: Solve for x
    x = 57,662,936,869.76/269,642.81
  6. Step 6: Final answer
    x = 213,849.34

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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.