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Finding the Fourth Proportional to 192,389.81, 287,175.83 and 169,664.61

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Solution

The fourth proportional to 192,389.81, 287,175.83 and 169,664.61 is: 253,254.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,389.81 : 287,175.83 = 169,664.61 : x
  2. Step 2: Convert to fraction form
    192,389.81/287,175.83 = 169,664.61/x
  3. Step 3: Cross multiply
    192,389.81x = 287,175.83 × 169,664.61
  4. Step 4: Simplify right side
    192,389.81x = 48,723,574,350.05
  5. Step 5: Solve for x
    x = 48,723,574,350.05/192,389.81
  6. Step 6: Final answer
    x = 253,254.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.