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Finding the Fourth Proportional to 171,323.40, 256,985.10 and 115,336.20

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Solution

The fourth proportional to 171,323.40, 256,985.10 and 115,336.20 is: 173,004.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,323.40 : 256,985.10 = 115,336.20 : x
  2. Step 2: Convert to fraction form
    171,323.40/256,985.10 = 115,336.20/x
  3. Step 3: Cross multiply
    171,323.40x = 256,985.10 × 115,336.20
  4. Step 4: Simplify right side
    171,323.40x = 29,639,684,890.62
  5. Step 5: Solve for x
    x = 29,639,684,890.62/171,323.40
  6. Step 6: Final answer
    x = 173,004.30

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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.