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Finding the Fourth Proportional to 398,515.55, 597,776.02 and 145,692.03

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Solution

The fourth proportional to 398,515.55, 597,776.02 and 145,692.03 is: 218,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,515.55 : 597,776.02 = 145,692.03 : x
  2. Step 2: Convert to fraction form
    398,515.55/597,776.02 = 145,692.03/x
  3. Step 3: Cross multiply
    398,515.55x = 597,776.02 × 145,692.03
  4. Step 4: Simplify right side
    398,515.55x = 87,091,203,716.55
  5. Step 5: Solve for x
    x = 87,091,203,716.55/398,515.55
  6. Step 6: Final answer
    x = 218,539.04

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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.