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Finding the Fourth Proportional to 543,125.40, 815,562.90 and 366,415.80

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Solution

The fourth proportional to 543,125.40, 815,562.90 and 366,415.80 is: 550,213.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,125.40 : 815,562.90 = 366,415.80 : x
  2. Step 2: Convert to fraction form
    543,125.40/815,562.90 = 366,415.80/x
  3. Step 3: Cross multiply
    543,125.40x = 815,562.90 × 366,415.80
  4. Step 4: Simplify right side
    543,125.40x = 298,835,132,453.82
  5. Step 5: Solve for x
    x = 298,835,132,453.82/543,125.40
  6. Step 6: Final answer
    x = 550,213.88

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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.