Home / 221,939.88-306,289.30-126,428.28

Finding the Fourth Proportional to 221,939.88, 306,289.30 and 126,428.28

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Solution

The fourth proportional to 221,939.88, 306,289.30 and 126,428.28 is: 174,478.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,939.88 : 306,289.30 = 126,428.28 : x
  2. Step 2: Convert to fraction form
    221,939.88/306,289.30 = 126,428.28/x
  3. Step 3: Cross multiply
    221,939.88x = 306,289.30 × 126,428.28
  4. Step 4: Simplify right side
    221,939.88x = 38,723,627,533.89
  5. Step 5: Solve for x
    x = 38,723,627,533.89/221,939.88
  6. Step 6: Final answer
    x = 174,478.01

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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.