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Finding the Fourth Proportional to 545,886.78, 818,830.17 and 213,229.50

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Solution

The fourth proportional to 545,886.78, 818,830.17 and 213,229.50 is: 319,844.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,886.78 : 818,830.17 = 213,229.50 : x
  2. Step 2: Convert to fraction form
    545,886.78/818,830.17 = 213,229.50/x
  3. Step 3: Cross multiply
    545,886.78x = 818,830.17 × 213,229.50
  4. Step 4: Simplify right side
    545,886.78x = 174,598,747,734.02
  5. Step 5: Solve for x
    x = 174,598,747,734.02/545,886.78
  6. Step 6: Final answer
    x = 319,844.25

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Similar ratio
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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.