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Finding the Fourth Proportional to 418,205.20, 627,331.84 and 118,662.34

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Solution

The fourth proportional to 418,205.20, 627,331.84 and 118,662.34 is: 178,000.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,205.20 : 627,331.84 = 118,662.34 : x
  2. Step 2: Convert to fraction form
    418,205.20/627,331.84 = 118,662.34/x
  3. Step 3: Cross multiply
    418,205.20x = 627,331.84 × 118,662.34
  4. Step 4: Simplify right side
    418,205.20x = 74,440,664,090.91
  5. Step 5: Solve for x
    x = 74,440,664,090.91/418,205.20
  6. Step 6: Final answer
    x = 178,000.33

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1.5x scale

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.