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Finding the Fourth Proportional to 304,842.15, 420,708.01 and 168,918.73

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Solution

The fourth proportional to 304,842.15, 420,708.01 and 168,918.73 is: 233,122.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,842.15 : 420,708.01 = 168,918.73 : x
  2. Step 2: Convert to fraction form
    304,842.15/420,708.01 = 168,918.73/x
  3. Step 3: Cross multiply
    304,842.15x = 420,708.01 × 168,918.73
  4. Step 4: Simplify right side
    304,842.15x = 71,065,463,959.17
  5. Step 5: Solve for x
    x = 71,065,463,959.17/304,842.15
  6. Step 6: Final answer
    x = 233,122.17

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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.