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Finding the Fourth Proportional to 279,579.62, 385,817.22 and 152,257.34

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Solution

The fourth proportional to 279,579.62, 385,817.22 and 152,257.34 is: 210,113.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,579.62 : 385,817.22 = 152,257.34 : x
  2. Step 2: Convert to fraction form
    279,579.62/385,817.22 = 152,257.34/x
  3. Step 3: Cross multiply
    279,579.62x = 385,817.22 × 152,257.34
  4. Step 4: Simplify right side
    279,579.62x = 58,743,503,643.39
  5. Step 5: Solve for x
    x = 58,743,503,643.39/279,579.62
  6. Step 6: Final answer
    x = 210,113.68

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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.