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Finding the Fourth Proportional to 238,778.74, 329,538.80 and 136,817.72

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Solution

The fourth proportional to 238,778.74, 329,538.80 and 136,817.72 is: 188,822.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,778.74 : 329,538.80 = 136,817.72 : x
  2. Step 2: Convert to fraction form
    238,778.74/329,538.80 = 136,817.72/x
  3. Step 3: Cross multiply
    238,778.74x = 329,538.80 × 136,817.72
  4. Step 4: Simplify right side
    238,778.74x = 45,086,747,267.54
  5. Step 5: Solve for x
    x = 45,086,747,267.54/238,778.74
  6. Step 6: Final answer
    x = 188,822.28

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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.