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Finding the Fourth Proportional to 418,400.28, 627,585.84 and 134,086.64

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Solution

The fourth proportional to 418,400.28, 627,585.84 and 134,086.64 is: 201,125.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,400.28 : 627,585.84 = 134,086.64 : x
  2. Step 2: Convert to fraction form
    418,400.28/627,585.84 = 134,086.64/x
  3. Step 3: Cross multiply
    418,400.28x = 627,585.84 × 134,086.64
  4. Step 4: Simplify right side
    418,400.28x = 84,150,873,459.25
  5. Step 5: Solve for x
    x = 84,150,873,459.25/418,400.28
  6. Step 6: Final answer
    x = 201,125.28

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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.