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Finding the Fourth Proportional to 311,379.96, 429,625.22 and 190,477.08

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Solution

The fourth proportional to 311,379.96, 429,625.22 and 190,477.08 is: 262,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,379.96 : 429,625.22 = 190,477.08 : x
  2. Step 2: Convert to fraction form
    311,379.96/429,625.22 = 190,477.08/x
  3. Step 3: Cross multiply
    311,379.96x = 429,625.22 × 190,477.08
  4. Step 4: Simplify right side
    311,379.96x = 81,833,757,399.96
  5. Step 5: Solve for x
    x = 81,833,757,399.96/311,379.96
  6. Step 6: Final answer
    x = 262,809.97

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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.