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Finding the Fourth Proportional to 573,679.62, 860,486.40 and 218,729.52

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Solution

The fourth proportional to 573,679.62, 860,486.40 and 218,729.52 is: 328,081.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,679.62 : 860,486.40 = 218,729.52 : x
  2. Step 2: Convert to fraction form
    573,679.62/860,486.40 = 218,729.52/x
  3. Step 3: Cross multiply
    573,679.62x = 860,486.40 × 218,729.52
  4. Step 4: Simplify right side
    573,679.62x = 188,213,777,238.53
  5. Step 5: Solve for x
    x = 188,213,777,238.53/573,679.62
  6. Step 6: Final answer
    x = 328,081.69

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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.