Home / 221,631.29-305,866.07-123,529.79

Finding the Fourth Proportional to 221,631.29, 305,866.07 and 123,529.79

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Solution

The fourth proportional to 221,631.29, 305,866.07 and 123,529.79 is: 170,479.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,631.29 : 305,866.07 = 123,529.79 : x
  2. Step 2: Convert to fraction form
    221,631.29/305,866.07 = 123,529.79/x
  3. Step 3: Cross multiply
    221,631.29x = 305,866.07 × 123,529.79
  4. Step 4: Simplify right side
    221,631.29x = 37,783,571,542.24
  5. Step 5: Solve for x
    x = 37,783,571,542.24/221,631.29
  6. Step 6: Final answer
    x = 170,479.41

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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.