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Finding the Fourth Proportional to 304,487.42, 420,179.72 and 168,508.65

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Solution

The fourth proportional to 304,487.42, 420,179.72 and 168,508.65 is: 232,534.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,487.42 : 420,179.72 = 168,508.65 : x
  2. Step 2: Convert to fraction form
    304,487.42/420,179.72 = 168,508.65/x
  3. Step 3: Cross multiply
    304,487.42x = 420,179.72 × 168,508.65
  4. Step 4: Simplify right side
    304,487.42x = 70,803,916,532.03
  5. Step 5: Solve for x
    x = 70,803,916,532.03/304,487.42
  6. Step 6: Final answer
    x = 232,534.79

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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.