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Finding the Fourth Proportional to 421,994.88, 582,338.40 and 240,765.48

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Solution

The fourth proportional to 421,994.88, 582,338.40 and 240,765.48 is: 332,248.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,994.88 : 582,338.40 = 240,765.48 : x
  2. Step 2: Convert to fraction form
    421,994.88/582,338.40 = 240,765.48/x
  3. Step 3: Cross multiply
    421,994.88x = 582,338.40 × 240,765.48
  4. Step 4: Simplify right side
    421,994.88x = 140,206,984,398.43
  5. Step 5: Solve for x
    x = 140,206,984,398.43/421,994.88
  6. Step 6: Final answer
    x = 332,248.07

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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.