Home / 305,183.12-421,145.16-169,217.60

Finding the Fourth Proportional to 305,183.12, 421,145.16 and 169,217.60

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Solution

The fourth proportional to 305,183.12, 421,145.16 and 169,217.60 is: 233,516.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,183.12 : 421,145.16 = 169,217.60 : x
  2. Step 2: Convert to fraction form
    305,183.12/421,145.16 = 169,217.60/x
  3. Step 3: Cross multiply
    305,183.12x = 421,145.16 × 169,217.60
  4. Step 4: Simplify right side
    305,183.12x = 71,265,173,226.82
  5. Step 5: Solve for x
    x = 71,265,173,226.82/305,183.12
  6. Step 6: Final answer
    x = 233,516.10

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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.