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Finding the Fourth Proportional to 238,715.10, 329,410.80 and 136,740.96

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Solution

The fourth proportional to 238,715.10, 329,410.80 and 136,740.96 is: 188,693.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,715.10 : 329,410.80 = 136,740.96 : x
  2. Step 2: Convert to fraction form
    238,715.10/329,410.80 = 136,740.96/x
  3. Step 3: Cross multiply
    238,715.10x = 329,410.80 × 136,740.96
  4. Step 4: Simplify right side
    238,715.10x = 45,043,949,026.37
  5. Step 5: Solve for x
    x = 45,043,949,026.37/238,715.10
  6. Step 6: Final answer
    x = 188,693.34

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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.