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Finding the Fourth Proportional to 344,864.88, 475,979.04 and 215,863.20

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Solution

The fourth proportional to 344,864.88, 475,979.04 and 215,863.20 is: 297,932.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,864.88 : 475,979.04 = 215,863.20 : x
  2. Step 2: Convert to fraction form
    344,864.88/475,979.04 = 215,863.20/x
  3. Step 3: Cross multiply
    344,864.88x = 475,979.04 × 215,863.20
  4. Step 4: Simplify right side
    344,864.88x = 102,746,358,707.33
  5. Step 5: Solve for x
    x = 102,746,358,707.33/344,864.88
  6. Step 6: Final answer
    x = 297,932.22

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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.