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Finding the Fourth Proportional to 308,215.96, 425,336.64 and 172,249.79

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Solution

The fourth proportional to 308,215.96, 425,336.64 and 172,249.79 is: 237,703.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,215.96 : 425,336.64 = 172,249.79 : x
  2. Step 2: Convert to fraction form
    308,215.96/425,336.64 = 172,249.79/x
  3. Step 3: Cross multiply
    308,215.96x = 425,336.64 × 172,249.79
  4. Step 4: Simplify right side
    308,215.96x = 73,264,147,992.56
  5. Step 5: Solve for x
    x = 73,264,147,992.56/308,215.96
  6. Step 6: Final answer
    x = 237,703.94

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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.