Home / 221,316.72-305,330.04-136,286.16

Finding the Fourth Proportional to 221,316.72, 305,330.04 and 136,286.16

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Solution

The fourth proportional to 221,316.72, 305,330.04 and 136,286.16 is: 188,021.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,316.72 : 305,330.04 = 136,286.16 : x
  2. Step 2: Convert to fraction form
    221,316.72/305,330.04 = 136,286.16/x
  3. Step 3: Cross multiply
    221,316.72x = 305,330.04 × 136,286.16
  4. Step 4: Simplify right side
    221,316.72x = 41,612,258,684.25
  5. Step 5: Solve for x
    x = 41,612,258,684.25/221,316.72
  6. Step 6: Final answer
    x = 188,021.31

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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.