Home / 238,719.28-329,426-131,289.28

Finding the Fourth Proportional to 238,719.28, 329,426 and 131,289.28

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Solution

The fourth proportional to 238,719.28, 329,426 and 131,289.28 is: 181,175.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,719.28 : 329,426 = 131,289.28 : x
  2. Step 2: Convert to fraction form
    238,719.28/329,426 = 131,289.28/x
  3. Step 3: Cross multiply
    238,719.28x = 329,426 × 131,289.28
  4. Step 4: Simplify right side
    238,719.28x = 43,250,102,353.28
  5. Step 5: Solve for x
    x = 43,250,102,353.28/238,719.28
  6. Step 6: Final answer
    x = 181,175.57

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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.