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Finding the Fourth Proportional to 305,545.27, 421,646.13 and 169,571.32

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Solution

The fourth proportional to 305,545.27, 421,646.13 and 169,571.32 is: 234,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,545.27 : 421,646.13 = 169,571.32 : x
  2. Step 2: Convert to fraction form
    305,545.27/421,646.13 = 169,571.32/x
  3. Step 3: Cross multiply
    305,545.27x = 421,646.13 × 169,571.32
  4. Step 4: Simplify right side
    305,545.27x = 71,499,090,836.99
  5. Step 5: Solve for x
    x = 71,499,090,836.99/305,545.27
  6. Step 6: Final answer
    x = 234,004.90

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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.