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Finding the Fourth Proportional to 238,212.75, 328,762.80 and 137,610.75

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Solution

The fourth proportional to 238,212.75, 328,762.80 and 137,610.75 is: 189,919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,212.75 : 328,762.80 = 137,610.75 : x
  2. Step 2: Convert to fraction form
    238,212.75/328,762.80 = 137,610.75/x
  3. Step 3: Cross multiply
    238,212.75x = 328,762.80 × 137,610.75
  4. Step 4: Simplify right side
    238,212.75x = 45,241,295,480.10
  5. Step 5: Solve for x
    x = 45,241,295,480.10/238,212.75
  6. Step 6: Final answer
    x = 189,919.71

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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.