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Finding the Fourth Proportional to 170,780.80, 256,171.20 and 160,412.80

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Solution

The fourth proportional to 170,780.80, 256,171.20 and 160,412.80 is: 240,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,780.80 : 256,171.20 = 160,412.80 : x
  2. Step 2: Convert to fraction form
    170,780.80/256,171.20 = 160,412.80/x
  3. Step 3: Cross multiply
    170,780.80x = 256,171.20 × 160,412.80
  4. Step 4: Simplify right side
    170,780.80x = 41,093,139,471.36
  5. Step 5: Solve for x
    x = 41,093,139,471.36/170,780.80
  6. Step 6: Final answer
    x = 240,619.20

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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.