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Finding the Fourth Proportional to 421,879.32, 582,164.22 and 240,598.88

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Solution

The fourth proportional to 421,879.32, 582,164.22 and 240,598.88 is: 332,009.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,879.32 : 582,164.22 = 240,598.88 : x
  2. Step 2: Convert to fraction form
    421,879.32/582,164.22 = 240,598.88/x
  3. Step 3: Cross multiply
    421,879.32x = 582,164.22 × 240,598.88
  4. Step 4: Simplify right side
    421,879.32x = 140,068,059,308.07
  5. Step 5: Solve for x
    x = 140,068,059,308.07/421,879.32
  6. Step 6: Final answer
    x = 332,009.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.