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Finding the Fourth Proportional to 238,220.75, 328,773.84 and 137,618.75

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Solution

The fourth proportional to 238,220.75, 328,773.84 and 137,618.75 is: 189,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,220.75 : 328,773.84 = 137,618.75 : x
  2. Step 2: Convert to fraction form
    238,220.75/328,773.84 = 137,618.75/x
  3. Step 3: Cross multiply
    238,220.75x = 328,773.84 × 137,618.75
  4. Step 4: Simplify right side
    238,220.75x = 45,245,444,893.50
  5. Step 5: Solve for x
    x = 45,245,444,893.50/238,220.75
  6. Step 6: Final answer
    x = 189,930.75

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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.