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Finding the Fourth Proportional to 171,383.80, 256,557.30 and 152,721.40

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Solution

The fourth proportional to 171,383.80, 256,557.30 and 152,721.40 is: 228,620.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,383.80 : 256,557.30 = 152,721.40 : x
  2. Step 2: Convert to fraction form
    171,383.80/256,557.30 = 152,721.40/x
  3. Step 3: Cross multiply
    171,383.80x = 256,557.30 × 152,721.40
  4. Step 4: Simplify right side
    171,383.80x = 39,181,790,036.22
  5. Step 5: Solve for x
    x = 39,181,790,036.22/171,383.80
  6. Step 6: Final answer
    x = 228,620.15

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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.