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Finding the Fourth Proportional to 547,740.70, 821,611.05 and 252,828.70

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Solution

The fourth proportional to 547,740.70, 821,611.05 and 252,828.70 is: 379,243.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,740.70 : 821,611.05 = 252,828.70 : x
  2. Step 2: Convert to fraction form
    547,740.70/821,611.05 = 252,828.70/x
  3. Step 3: Cross multiply
    547,740.70x = 821,611.05 × 252,828.70
  4. Step 4: Simplify right side
    547,740.70x = 207,726,853,677.14
  5. Step 5: Solve for x
    x = 207,726,853,677.14/547,740.70
  6. Step 6: Final answer
    x = 379,243.05

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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.