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Finding the Fourth Proportional to 309,718.29, 464,551.92 and 219,387.90

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Solution

The fourth proportional to 309,718.29, 464,551.92 and 219,387.90 is: 329,063.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,718.29 : 464,551.92 = 219,387.90 : x
  2. Step 2: Convert to fraction form
    309,718.29/464,551.92 = 219,387.90/x
  3. Step 3: Cross multiply
    309,718.29x = 464,551.92 × 219,387.90
  4. Step 4: Simplify right side
    309,718.29x = 101,917,070,169.77
  5. Step 5: Solve for x
    x = 101,917,070,169.77/309,718.29
  6. Step 6: Final answer
    x = 329,063.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.