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Finding the Fourth Proportional to 351,490.40, 527,235.60 and 85,250.49

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Solution

The fourth proportional to 351,490.40, 527,235.60 and 85,250.49 is: 127,875.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,490.40 : 527,235.60 = 85,250.49 : x
  2. Step 2: Convert to fraction form
    351,490.40/527,235.60 = 85,250.49/x
  3. Step 3: Cross multiply
    351,490.40x = 527,235.60 × 85,250.49
  4. Step 4: Simplify right side
    351,490.40x = 44,947,093,245.44
  5. Step 5: Solve for x
    x = 44,947,093,245.44/351,490.40
  6. Step 6: Final answer
    x = 127,875.74

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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.