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Finding the Fourth Proportional to 373,296.40, 559,507.20 and 279,692.80

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Solution

The fourth proportional to 373,296.40, 559,507.20 and 279,692.80 is: 419,211.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,296.40 : 559,507.20 = 279,692.80 : x
  2. Step 2: Convert to fraction form
    373,296.40/559,507.20 = 279,692.80/x
  3. Step 3: Cross multiply
    373,296.40x = 559,507.20 × 279,692.80
  4. Step 4: Simplify right side
    373,296.40x = 156,490,135,388.16
  5. Step 5: Solve for x
    x = 156,490,135,388.16/373,296.40
  6. Step 6: Final answer
    x = 419,211.48

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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.