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Finding the Fourth Proportional to 421,876.89, 582,074.78 and 240,522.68

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Solution

The fourth proportional to 421,876.89, 582,074.78 and 240,522.68 is: 331,855.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,876.89 : 582,074.78 = 240,522.68 : x
  2. Step 2: Convert to fraction form
    421,876.89/582,074.78 = 240,522.68/x
  3. Step 3: Cross multiply
    421,876.89x = 582,074.78 × 240,522.68
  4. Step 4: Simplify right side
    421,876.89x = 140,002,186,298.58
  5. Step 5: Solve for x
    x = 140,002,186,298.58/421,876.89
  6. Step 6: Final answer
    x = 331,855.55

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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.