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Finding the Fourth Proportional to 304,832.20, 420,663.88 and 168,865.72

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Solution

The fourth proportional to 304,832.20, 420,663.88 and 168,865.72 is: 233,032.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,832.20 : 420,663.88 = 168,865.72 : x
  2. Step 2: Convert to fraction form
    304,832.20/420,663.88 = 168,865.72/x
  3. Step 3: Cross multiply
    304,832.20x = 420,663.88 × 168,865.72
  4. Step 4: Simplify right side
    304,832.20x = 71,035,708,974.19
  5. Step 5: Solve for x
    x = 71,035,708,974.19/304,832.20
  6. Step 6: Final answer
    x = 233,032.17

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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.