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Finding the Fourth Proportional to 238,842.80, 329,650.20 and 136,936.72

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Solution

The fourth proportional to 238,842.80, 329,650.20 and 136,936.72 is: 188,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,842.80 : 329,650.20 = 136,936.72 : x
  2. Step 2: Convert to fraction form
    238,842.80/329,650.20 = 136,936.72/x
  3. Step 3: Cross multiply
    238,842.80x = 329,650.20 × 136,936.72
  4. Step 4: Simplify right side
    238,842.80x = 45,141,217,135.34
  5. Step 5: Solve for x
    x = 45,141,217,135.34/238,842.80
  6. Step 6: Final answer
    x = 188,999.70

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1.5x scale

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.