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Finding the Fourth Proportional to 159,321.60, 238,982.40 and 115,257.60

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Solution

The fourth proportional to 159,321.60, 238,982.40 and 115,257.60 is: 172,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,321.60 : 238,982.40 = 115,257.60 : x
  2. Step 2: Convert to fraction form
    159,321.60/238,982.40 = 115,257.60/x
  3. Step 3: Cross multiply
    159,321.60x = 238,982.40 × 115,257.60
  4. Step 4: Simplify right side
    159,321.60x = 27,544,537,866.24
  5. Step 5: Solve for x
    x = 27,544,537,866.24/159,321.60
  6. Step 6: Final answer
    x = 172,886.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.