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Finding the Fourth Proportional to 545,891.78, 818,837.67 and 213,234.50

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Solution

The fourth proportional to 545,891.78, 818,837.67 and 213,234.50 is: 319,851.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,891.78 : 818,837.67 = 213,234.50 : x
  2. Step 2: Convert to fraction form
    545,891.78/818,837.67 = 213,234.50/x
  3. Step 3: Cross multiply
    545,891.78x = 818,837.67 × 213,234.50
  4. Step 4: Simplify right side
    545,891.78x = 174,604,441,143.62
  5. Step 5: Solve for x
    x = 174,604,441,143.62/545,891.78
  6. Step 6: Final answer
    x = 319,851.75

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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.