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Finding the Fourth Proportional to 613,867.32, 920,878.74 and 170,635.32

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Solution

The fourth proportional to 613,867.32, 920,878.74 and 170,635.32 is: 255,974.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,867.32 : 920,878.74 = 170,635.32 : x
  2. Step 2: Convert to fraction form
    613,867.32/920,878.74 = 170,635.32/x
  3. Step 3: Cross multiply
    613,867.32x = 920,878.74 × 170,635.32
  4. Step 4: Simplify right side
    613,867.32x = 157,134,438,481.10
  5. Step 5: Solve for x
    x = 157,134,438,481.10/613,867.32
  6. Step 6: Final answer
    x = 255,974.59

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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.