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Finding the Fourth Proportional to 407,215.72, 611,062.62 and 170,540.20

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Solution

The fourth proportional to 407,215.72, 611,062.62 and 170,540.20 is: 255,910.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,215.72 : 611,062.62 = 170,540.20 : x
  2. Step 2: Convert to fraction form
    407,215.72/611,062.62 = 170,540.20/x
  3. Step 3: Cross multiply
    407,215.72x = 611,062.62 × 170,540.20
  4. Step 4: Simplify right side
    407,215.72x = 104,210,741,427.32
  5. Step 5: Solve for x
    x = 104,210,741,427.32/407,215.72
  6. Step 6: Final answer
    x = 255,910.41

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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.