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Finding the Fourth Proportional to 351,405.60, 527,106.78 and 271,559.58

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Solution

The fourth proportional to 351,405.60, 527,106.78 and 271,559.58 is: 407,338.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,405.60 : 527,106.78 = 271,559.58 : x
  2. Step 2: Convert to fraction form
    351,405.60/527,106.78 = 271,559.58/x
  3. Step 3: Cross multiply
    351,405.60x = 527,106.78 × 271,559.58
  4. Step 4: Simplify right side
    351,405.60x = 143,140,895,791.95
  5. Step 5: Solve for x
    x = 143,140,895,791.95/351,405.60
  6. Step 6: Final answer
    x = 407,338.12

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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.