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Finding the Fourth Proportional to 221,518.56, 305,721.24 and 126,040.23

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Solution

The fourth proportional to 221,518.56, 305,721.24 and 126,040.23 is: 173,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,518.56 : 305,721.24 = 126,040.23 : x
  2. Step 2: Convert to fraction form
    221,518.56/305,721.24 = 126,040.23/x
  3. Step 3: Cross multiply
    221,518.56x = 305,721.24 × 126,040.23
  4. Step 4: Simplify right side
    221,518.56x = 38,533,175,405.49
  5. Step 5: Solve for x
    x = 38,533,175,405.49/221,518.56
  6. Step 6: Final answer
    x = 173,950.10

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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.