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Finding the Fourth Proportional to 316,170.92, 436,331.85 and 187,183.42

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Solution

The fourth proportional to 316,170.92, 436,331.85 and 187,183.42 is: 258,322.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,170.92 : 436,331.85 = 187,183.42 : x
  2. Step 2: Convert to fraction form
    316,170.92/436,331.85 = 187,183.42/x
  3. Step 3: Cross multiply
    316,170.92x = 436,331.85 × 187,183.42
  4. Step 4: Simplify right side
    316,170.92x = 81,674,086,145.16
  5. Step 5: Solve for x
    x = 81,674,086,145.16/316,170.92
  6. Step 6: Final answer
    x = 258,322.57

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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.