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Finding the Fourth Proportional to 171,639.77, 257,476.28 and 53,279.33

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Solution

The fourth proportional to 171,639.77, 257,476.28 and 53,279.33 is: 79,924.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,639.77 : 257,476.28 = 53,279.33 : x
  2. Step 2: Convert to fraction form
    171,639.77/257,476.28 = 53,279.33/x
  3. Step 3: Cross multiply
    171,639.77x = 257,476.28 × 53,279.33
  4. Step 4: Simplify right side
    171,639.77x = 13,718,162,135.51
  5. Step 5: Solve for x
    x = 13,718,162,135.51/171,639.77
  6. Step 6: Final answer
    x = 79,924.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.