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Finding the Fourth Proportional to 418,215.84, 627,324.27 and 114,612.51

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Solution

The fourth proportional to 418,215.84, 627,324.27 and 114,612.51 is: 171,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,215.84 : 627,324.27 = 114,612.51 : x
  2. Step 2: Convert to fraction form
    418,215.84/627,324.27 = 114,612.51/x
  3. Step 3: Cross multiply
    418,215.84x = 627,324.27 × 114,612.51
  4. Step 4: Simplify right side
    418,215.84x = 71,899,209,168.62
  5. Step 5: Solve for x
    x = 71,899,209,168.62/418,215.84
  6. Step 6: Final answer
    x = 171,918.90

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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.