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Finding the Fourth Proportional to 308,882.19, 426,236.55 and 171,051.21

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Solution

The fourth proportional to 308,882.19, 426,236.55 and 171,051.21 is: 236,039.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,882.19 : 426,236.55 = 171,051.21 : x
  2. Step 2: Convert to fraction form
    308,882.19/426,236.55 = 171,051.21/x
  3. Step 3: Cross multiply
    308,882.19x = 426,236.55 × 171,051.21
  4. Step 4: Simplify right side
    308,882.19x = 72,908,277,623.73
  5. Step 5: Solve for x
    x = 72,908,277,623.73/308,882.19
  6. Step 6: Final answer
    x = 236,039.11

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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.