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Finding the Fourth Proportional to 351,485.40, 527,228.10 and 85,245.49

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Solution

The fourth proportional to 351,485.40, 527,228.10 and 85,245.49 is: 127,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,485.40 : 527,228.10 = 85,245.49 : x
  2. Step 2: Convert to fraction form
    351,485.40/527,228.10 = 85,245.49/x
  3. Step 3: Cross multiply
    351,485.40x = 527,228.10 × 85,245.49
  4. Step 4: Simplify right side
    351,485.40x = 44,943,817,726.27
  5. Step 5: Solve for x
    x = 44,943,817,726.27/351,485.40
  6. Step 6: Final answer
    x = 127,868.24

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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.