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Finding the Fourth Proportional to 308,605.92, 425,892.23 and 172,642.14

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Solution

The fourth proportional to 308,605.92, 425,892.23 and 172,642.14 is: 238,255.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,605.92 : 425,892.23 = 172,642.14 : x
  2. Step 2: Convert to fraction form
    308,605.92/425,892.23 = 172,642.14/x
  3. Step 3: Cross multiply
    308,605.92x = 425,892.23 × 172,642.14
  4. Step 4: Simplify right side
    308,605.92x = 73,526,945,133.36
  5. Step 5: Solve for x
    x = 73,526,945,133.36/308,605.92
  6. Step 6: Final answer
    x = 238,255.14

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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.