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Finding the Fourth Proportional to 304,664.21, 420,441.03 and 168,697.89

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Solution

The fourth proportional to 304,664.21, 420,441.03 and 168,697.89 is: 232,805.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,664.21 : 420,441.03 = 168,697.89 : x
  2. Step 2: Convert to fraction form
    304,664.21/420,441.03 = 168,697.89/x
  3. Step 3: Cross multiply
    304,664.21x = 420,441.03 × 168,697.89
  4. Step 4: Simplify right side
    304,664.21x = 70,927,513,786.94
  5. Step 5: Solve for x
    x = 70,927,513,786.94/304,664.21
  6. Step 6: Final answer
    x = 232,805.54

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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.