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Finding the Fourth Proportional to 238,291.79, 328,660.45 and 161,869.81

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Solution

The fourth proportional to 238,291.79, 328,660.45 and 161,869.81 is: 223,256.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,291.79 : 328,660.45 = 161,869.81 : x
  2. Step 2: Convert to fraction form
    238,291.79/328,660.45 = 161,869.81/x
  3. Step 3: Cross multiply
    238,291.79x = 328,660.45 × 161,869.81
  4. Step 4: Simplify right side
    238,291.79x = 53,200,204,596.01
  5. Step 5: Solve for x
    x = 53,200,204,596.01/238,291.79
  6. Step 6: Final answer
    x = 223,256.56

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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.