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Finding the Fourth Proportional to 418,068.20, 627,102.30 and 353,114.30

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Solution

The fourth proportional to 418,068.20, 627,102.30 and 353,114.30 is: 529,671.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,068.20 : 627,102.30 = 353,114.30 : x
  2. Step 2: Convert to fraction form
    418,068.20/627,102.30 = 353,114.30/x
  3. Step 3: Cross multiply
    418,068.20x = 627,102.30 × 353,114.30
  4. Step 4: Simplify right side
    418,068.20x = 221,438,789,692.89
  5. Step 5: Solve for x
    x = 221,438,789,692.89/418,068.20
  6. Step 6: Final answer
    x = 529,671.45

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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.