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Finding the Fourth Proportional to 238,716.65, 329,431.17 and 129,822.01

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Solution

The fourth proportional to 238,716.65, 329,431.17 and 129,822.01 is: 179,155.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,716.65 : 329,431.17 = 129,822.01 : x
  2. Step 2: Convert to fraction form
    238,716.65/329,431.17 = 129,822.01/x
  3. Step 3: Cross multiply
    238,716.65x = 329,431.17 × 129,822.01
  4. Step 4: Simplify right side
    238,716.65x = 42,767,416,228.15
  5. Step 5: Solve for x
    x = 42,767,416,228.15/238,716.65
  6. Step 6: Final answer
    x = 179,155.57

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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.