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Finding the Fourth Proportional to 371,215.20, 556,822.80 and 276,736.80

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Solution

The fourth proportional to 371,215.20, 556,822.80 and 276,736.80 is: 415,105.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,215.20 : 556,822.80 = 276,736.80 : x
  2. Step 2: Convert to fraction form
    371,215.20/556,822.80 = 276,736.80/x
  3. Step 3: Cross multiply
    371,215.20x = 556,822.80 × 276,736.80
  4. Step 4: Simplify right side
    371,215.20x = 154,093,359,839.04
  5. Step 5: Solve for x
    x = 154,093,359,839.04/371,215.20
  6. Step 6: Final answer
    x = 415,105.20

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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.