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Finding the Fourth Proportional to 351,366.40, 527,049.60 and 211,052.80

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Solution

The fourth proportional to 351,366.40, 527,049.60 and 211,052.80 is: 316,579.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,366.40 : 527,049.60 = 211,052.80 : x
  2. Step 2: Convert to fraction form
    351,366.40/527,049.60 = 211,052.80/x
  3. Step 3: Cross multiply
    351,366.40x = 527,049.60 × 211,052.80
  4. Step 4: Simplify right side
    351,366.40x = 111,235,293,818.88
  5. Step 5: Solve for x
    x = 111,235,293,818.88/351,366.40
  6. Step 6: Final answer
    x = 316,579.20

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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.