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Finding the Fourth Proportional to 171,478.80, 256,780.80 and 136,486.80

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Solution

The fourth proportional to 171,478.80, 256,780.80 and 136,486.80 is: 204,382.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,478.80 : 256,780.80 = 136,486.80 : x
  2. Step 2: Convert to fraction form
    171,478.80/256,780.80 = 136,486.80/x
  3. Step 3: Cross multiply
    171,478.80x = 256,780.80 × 136,486.80
  4. Step 4: Simplify right side
    171,478.80x = 35,047,189,693.44
  5. Step 5: Solve for x
    x = 35,047,189,693.44/171,478.80
  6. Step 6: Final answer
    x = 204,382.06

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1.5x scale

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.