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Finding the Fourth Proportional to 203,532.07, 305,312.70 and 53,770.90

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Solution

The fourth proportional to 203,532.07, 305,312.70 and 53,770.90 is: 80,660.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,532.07 : 305,312.70 = 53,770.90 : x
  2. Step 2: Convert to fraction form
    203,532.07/305,312.70 = 53,770.90/x
  3. Step 3: Cross multiply
    203,532.07x = 305,312.70 × 53,770.90
  4. Step 4: Simplify right side
    203,532.07x = 16,416,938,660.43
  5. Step 5: Solve for x
    x = 16,416,938,660.43/203,532.07
  6. Step 6: Final answer
    x = 80,660.21

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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.