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Finding the Fourth Proportional to 308,168.11, 425,263.83 and 172,203.18

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Solution

The fourth proportional to 308,168.11, 425,263.83 and 172,203.18 is: 237,635.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,168.11 : 425,263.83 = 172,203.18 : x
  2. Step 2: Convert to fraction form
    308,168.11/425,263.83 = 172,203.18/x
  3. Step 3: Cross multiply
    308,168.11x = 425,263.83 × 172,203.18
  4. Step 4: Simplify right side
    308,168.11x = 73,231,783,864.98
  5. Step 5: Solve for x
    x = 73,231,783,864.98/308,168.11
  6. Step 6: Final answer
    x = 237,635.83

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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.