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Finding the Fourth Proportional to 418,798.43, 627,891.35 and 134,327.02

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Solution

The fourth proportional to 418,798.43, 627,891.35 and 134,327.02 is: 201,392.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,798.43 : 627,891.35 = 134,327.02 : x
  2. Step 2: Convert to fraction form
    418,798.43/627,891.35 = 134,327.02/x
  3. Step 3: Cross multiply
    418,798.43x = 627,891.35 × 134,327.02
  4. Step 4: Simplify right side
    418,798.43x = 84,342,773,748.18
  5. Step 5: Solve for x
    x = 84,342,773,748.18/418,798.43
  6. Step 6: Final answer
    x = 201,392.29

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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.