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Finding the Fourth Proportional to 421,892.55, 582,141.74 and 240,617.66

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Solution

The fourth proportional to 421,892.55, 582,141.74 and 240,617.66 is: 332,012.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,892.55 : 582,141.74 = 240,617.66 : x
  2. Step 2: Convert to fraction form
    421,892.55/582,141.74 = 240,617.66/x
  3. Step 3: Cross multiply
    421,892.55x = 582,141.74 × 240,617.66
  4. Step 4: Simplify right side
    421,892.55x = 140,073,579,153.33
  5. Step 5: Solve for x
    x = 140,073,579,153.33/421,892.55
  6. Step 6: Final answer
    x = 332,012.45

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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.