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Finding the Fourth Proportional to 351,602.90, 527,793.15 and 218,633.30

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Solution

The fourth proportional to 351,602.90, 527,793.15 and 218,633.30 is: 328,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,602.90 : 527,793.15 = 218,633.30 : x
  2. Step 2: Convert to fraction form
    351,602.90/527,793.15 = 218,633.30/x
  3. Step 3: Cross multiply
    351,602.90x = 527,793.15 × 218,633.30
  4. Step 4: Simplify right side
    351,602.90x = 115,393,158,101.90
  5. Step 5: Solve for x
    x = 115,393,158,101.90/351,602.90
  6. Step 6: Final answer
    x = 328,191.71

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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.