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Finding the Fourth Proportional to 238,579.64, 329,237.24 and 129,681.62

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Solution

The fourth proportional to 238,579.64, 329,237.24 and 129,681.62 is: 178,959.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,579.64 : 329,237.24 = 129,681.62 : x
  2. Step 2: Convert to fraction form
    238,579.64/329,237.24 = 129,681.62/x
  3. Step 3: Cross multiply
    238,579.64x = 329,237.24 × 129,681.62
  4. Step 4: Simplify right side
    238,579.64x = 42,696,018,317.03
  5. Step 5: Solve for x
    x = 42,696,018,317.03/238,579.64
  6. Step 6: Final answer
    x = 178,959.19

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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.