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Finding the Fourth Proportional to 573,889.80, 860,801.49 and 218,939.70

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Solution

The fourth proportional to 573,889.80, 860,801.49 and 218,939.70 is: 328,396.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,889.80 : 860,801.49 = 218,939.70 : x
  2. Step 2: Convert to fraction form
    573,889.80/860,801.49 = 218,939.70/x
  3. Step 3: Cross multiply
    573,889.80x = 860,801.49 × 218,939.70
  4. Step 4: Simplify right side
    573,889.80x = 188,463,619,980.15
  5. Step 5: Solve for x
    x = 188,463,619,980.15/573,889.80
  6. Step 6: Final answer
    x = 328,396.88

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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.