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Finding the Fourth Proportional to 355,245.40, 532,868.10 and 353,171.80

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Solution

The fourth proportional to 355,245.40, 532,868.10 and 353,171.80 is: 529,757.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,245.40 : 532,868.10 = 353,171.80 : x
  2. Step 2: Convert to fraction form
    355,245.40/532,868.10 = 353,171.80/x
  3. Step 3: Cross multiply
    355,245.40x = 532,868.10 × 353,171.80
  4. Step 4: Simplify right side
    355,245.40x = 188,193,986,039.58
  5. Step 5: Solve for x
    x = 188,193,986,039.58/355,245.40
  6. Step 6: Final answer
    x = 529,757.70

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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.