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Finding the Fourth Proportional to 220,803.16, 330,958.38 and 87,647.80

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Solution

The fourth proportional to 220,803.16, 330,958.38 and 87,647.80 is: 131,373.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,803.16 : 330,958.38 = 87,647.80 : x
  2. Step 2: Convert to fraction form
    220,803.16/330,958.38 = 87,647.80/x
  3. Step 3: Cross multiply
    220,803.16x = 330,958.38 × 87,647.80
  4. Step 4: Simplify right side
    220,803.16x = 29,007,773,898.56
  5. Step 5: Solve for x
    x = 29,007,773,898.56/220,803.16
  6. Step 6: Final answer
    x = 131,373.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.