Home / 221,209.04-305,301.32-135,217.61

Finding the Fourth Proportional to 221,209.04, 305,301.32 and 135,217.61

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Solution

The fourth proportional to 221,209.04, 305,301.32 and 135,217.61 is: 186,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,209.04 : 305,301.32 = 135,217.61 : x
  2. Step 2: Convert to fraction form
    221,209.04/305,301.32 = 135,217.61/x
  3. Step 3: Cross multiply
    221,209.04x = 305,301.32 × 135,217.61
  4. Step 4: Simplify right side
    221,209.04x = 41,282,112,617.65
  5. Step 5: Solve for x
    x = 41,282,112,617.65/221,209.04
  6. Step 6: Final answer
    x = 186,620.37

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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.