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Finding the Fourth Proportional to 418,641.36, 627,955.92 and 103,101.36

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Solution

The fourth proportional to 418,641.36, 627,955.92 and 103,101.36 is: 154,650.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,641.36 : 627,955.92 = 103,101.36 : x
  2. Step 2: Convert to fraction form
    418,641.36/627,955.92 = 103,101.36/x
  3. Step 3: Cross multiply
    418,641.36x = 627,955.92 × 103,101.36
  4. Step 4: Simplify right side
    418,641.36x = 64,743,109,372.05
  5. Step 5: Solve for x
    x = 64,743,109,372.05/418,641.36
  6. Step 6: Final answer
    x = 154,650.53

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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.