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Finding the Fourth Proportional to 418,456.22, 627,743.45 and 134,080.27

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Solution

The fourth proportional to 418,456.22, 627,743.45 and 134,080.27 is: 201,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,456.22 : 627,743.45 = 134,080.27 : x
  2. Step 2: Convert to fraction form
    418,456.22/627,743.45 = 134,080.27/x
  3. Step 3: Cross multiply
    418,456.22x = 627,743.45 × 134,080.27
  4. Step 4: Simplify right side
    418,456.22x = 84,168,010,032.57
  5. Step 5: Solve for x
    x = 84,168,010,032.57/418,456.22
  6. Step 6: Final answer
    x = 201,139.35

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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.