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Finding the Fourth Proportional to 220,505.79, 330,868.03 and 87,383.10

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Solution

The fourth proportional to 220,505.79, 330,868.03 and 87,383.10 is: 131,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,505.79 : 330,868.03 = 87,383.10 : x
  2. Step 2: Convert to fraction form
    220,505.79/330,868.03 = 87,383.10/x
  3. Step 3: Cross multiply
    220,505.79x = 330,868.03 × 87,383.10
  4. Step 4: Simplify right side
    220,505.79x = 28,912,274,152.29
  5. Step 5: Solve for x
    x = 28,912,274,152.29/220,505.79
  6. Step 6: Final answer
    x = 131,117.98

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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.