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Finding the Fourth Proportional to 238,217.75, 328,769.70 and 137,615.75

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Solution

The fourth proportional to 238,217.75, 328,769.70 and 137,615.75 is: 189,926.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,217.75 : 328,769.70 = 137,615.75 : x
  2. Step 2: Convert to fraction form
    238,217.75/328,769.70 = 137,615.75/x
  3. Step 3: Cross multiply
    238,217.75x = 328,769.70 × 137,615.75
  4. Step 4: Simplify right side
    238,217.75x = 45,243,888,842.78
  5. Step 5: Solve for x
    x = 45,243,888,842.78/238,217.75
  6. Step 6: Final answer
    x = 189,926.61

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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.