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Finding the Fourth Proportional to 308,777.44, 426,131.63 and 172,808.56

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Solution

The fourth proportional to 308,777.44, 426,131.63 and 172,808.56 is: 238,486.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,777.44 : 426,131.63 = 172,808.56 : x
  2. Step 2: Convert to fraction form
    308,777.44/426,131.63 = 172,808.56/x
  3. Step 3: Cross multiply
    308,777.44x = 426,131.63 × 172,808.56
  4. Step 4: Simplify right side
    308,777.44x = 73,639,193,667.41
  5. Step 5: Solve for x
    x = 73,639,193,667.41/308,777.44
  6. Step 6: Final answer
    x = 238,486.31

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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.