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Finding the Fourth Proportional to 171,394.60, 256,995.75 and 117,420.28

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Solution

The fourth proportional to 171,394.60, 256,995.75 and 117,420.28 is: 176,064.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,394.60 : 256,995.75 = 117,420.28 : x
  2. Step 2: Convert to fraction form
    171,394.60/256,995.75 = 117,420.28/x
  3. Step 3: Cross multiply
    171,394.60x = 256,995.75 × 117,420.28
  4. Step 4: Simplify right side
    171,394.60x = 30,176,514,167.25
  5. Step 5: Solve for x
    x = 30,176,514,167.25/171,394.60
  6. Step 6: Final answer
    x = 176,064.56

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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.