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Finding the Fourth Proportional to 221,362.44, 305,478.72 and 125,869.13

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Solution

The fourth proportional to 221,362.44, 305,478.72 and 125,869.13 is: 173,698.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,362.44 : 305,478.72 = 125,869.13 : x
  2. Step 2: Convert to fraction form
    221,362.44/305,478.72 = 125,869.13/x
  3. Step 3: Cross multiply
    221,362.44x = 305,478.72 × 125,869.13
  4. Step 4: Simplify right side
    221,362.44x = 38,450,339,192.52
  5. Step 5: Solve for x
    x = 38,450,339,192.52/221,362.44
  6. Step 6: Final answer
    x = 173,698.57

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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.