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Finding the Fourth Proportional to 371,142.36, 557,367.66 and 276,398.28

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Solution

The fourth proportional to 371,142.36, 557,367.66 and 276,398.28 is: 415,084.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,142.36 : 557,367.66 = 276,398.28 : x
  2. Step 2: Convert to fraction form
    371,142.36/557,367.66 = 276,398.28/x
  3. Step 3: Cross multiply
    371,142.36x = 557,367.66 × 276,398.28
  4. Step 4: Simplify right side
    371,142.36x = 154,055,462,551.63
  5. Step 5: Solve for x
    x = 154,055,462,551.63/371,142.36
  6. Step 6: Final answer
    x = 415,084.56

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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.