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Finding the Fourth Proportional to 439,415.40, 659,123.10 and 262,122.60

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Solution

The fourth proportional to 439,415.40, 659,123.10 and 262,122.60 is: 393,183.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,415.40 : 659,123.10 = 262,122.60 : x
  2. Step 2: Convert to fraction form
    439,415.40/659,123.10 = 262,122.60/x
  3. Step 3: Cross multiply
    439,415.40x = 659,123.10 × 262,122.60
  4. Step 4: Simplify right side
    439,415.40x = 172,771,060,692.06
  5. Step 5: Solve for x
    x = 172,771,060,692.06/439,415.40
  6. Step 6: Final answer
    x = 393,183.90

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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.