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Finding the Fourth Proportional to 304,687.88, 420,466.92 and 168,721.28

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Solution

The fourth proportional to 304,687.88, 420,466.92 and 168,721.28 is: 232,834.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,687.88 : 420,466.92 = 168,721.28 : x
  2. Step 2: Convert to fraction form
    304,687.88/420,466.92 = 168,721.28/x
  3. Step 3: Cross multiply
    304,687.88x = 420,466.92 × 168,721.28
  4. Step 4: Simplify right side
    304,687.88x = 70,941,716,940.06
  5. Step 5: Solve for x
    x = 70,941,716,940.06/304,687.88
  6. Step 6: Final answer
    x = 232,834.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.