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Finding the Fourth Proportional to 170,665.20, 256,208.40 and 107,485.20

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Solution

The fourth proportional to 170,665.20, 256,208.40 and 107,485.20 is: 161,360.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,665.20 : 256,208.40 = 107,485.20 : x
  2. Step 2: Convert to fraction form
    170,665.20/256,208.40 = 107,485.20/x
  3. Step 3: Cross multiply
    170,665.20x = 256,208.40 × 107,485.20
  4. Step 4: Simplify right side
    170,665.20x = 27,538,611,115.68
  5. Step 5: Solve for x
    x = 27,538,611,115.68/170,665.20
  6. Step 6: Final answer
    x = 161,360.44

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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.