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Finding the Fourth Proportional to 402,245.17, 603,239.61 and 132,311.54

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Solution

The fourth proportional to 402,245.17, 603,239.61 and 132,311.54 is: 198,425.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,245.17 : 603,239.61 = 132,311.54 : x
  2. Step 2: Convert to fraction form
    402,245.17/603,239.61 = 132,311.54/x
  3. Step 3: Cross multiply
    402,245.17x = 603,239.61 × 132,311.54
  4. Step 4: Simplify right side
    402,245.17x = 79,815,559,106.19
  5. Step 5: Solve for x
    x = 79,815,559,106.19/402,245.17
  6. Step 6: Final answer
    x = 198,425.15

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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.