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Finding the Fourth Proportional to 418,120.04, 627,269.16 and 118,692.20

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Solution

The fourth proportional to 418,120.04, 627,269.16 and 118,692.20 is: 178,063.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,120.04 : 627,269.16 = 118,692.20 : x
  2. Step 2: Convert to fraction form
    418,120.04/627,269.16 = 118,692.20/x
  3. Step 3: Cross multiply
    418,120.04x = 627,269.16 × 118,692.20
  4. Step 4: Simplify right side
    418,120.04x = 74,451,956,592.55
  5. Step 5: Solve for x
    x = 74,451,956,592.55/418,120.04
  6. Step 6: Final answer
    x = 178,063.59

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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.