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Finding the Fourth Proportional to 237,419.85, 327,639.44 and 129,989.91

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Solution

The fourth proportional to 237,419.85, 327,639.44 and 129,989.91 is: 179,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,419.85 : 327,639.44 = 129,989.91 : x
  2. Step 2: Convert to fraction form
    237,419.85/327,639.44 = 129,989.91/x
  3. Step 3: Cross multiply
    237,419.85x = 327,639.44 × 129,989.91
  4. Step 4: Simplify right side
    237,419.85x = 42,589,820,668.10
  5. Step 5: Solve for x
    x = 42,589,820,668.10/237,419.85
  6. Step 6: Final answer
    x = 179,386.10

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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.