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Finding the Fourth Proportional to 418,398.78, 627,583.58 and 134,085.14

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Solution

The fourth proportional to 418,398.78, 627,583.58 and 134,085.14 is: 201,123.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,398.78 : 627,583.58 = 134,085.14 : x
  2. Step 2: Convert to fraction form
    418,398.78/627,583.58 = 134,085.14/x
  3. Step 3: Cross multiply
    418,398.78x = 627,583.58 × 134,085.14
  4. Step 4: Simplify right side
    418,398.78x = 84,149,632,186.00
  5. Step 5: Solve for x
    x = 84,149,632,186.00/418,398.78
  6. Step 6: Final answer
    x = 201,123.03

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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.