Home / 221,319.72-305,334.18-136,289.16

Finding the Fourth Proportional to 221,319.72, 305,334.18 and 136,289.16

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Solution

The fourth proportional to 221,319.72, 305,334.18 and 136,289.16 is: 188,025.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,319.72 : 305,334.18 = 136,289.16 : x
  2. Step 2: Convert to fraction form
    221,319.72/305,334.18 = 136,289.16/x
  3. Step 3: Cross multiply
    221,319.72x = 305,334.18 × 136,289.16
  4. Step 4: Simplify right side
    221,319.72x = 41,613,738,911.49
  5. Step 5: Solve for x
    x = 41,613,738,911.49/221,319.72
  6. Step 6: Final answer
    x = 188,025.45

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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.