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Finding the Fourth Proportional to 215,876.90, 323,908.41 and 115,920.20

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Solution

The fourth proportional to 215,876.90, 323,908.41 and 115,920.20 is: 173,930.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,876.90 : 323,908.41 = 115,920.20 : x
  2. Step 2: Convert to fraction form
    215,876.90/323,908.41 = 115,920.20/x
  3. Step 3: Cross multiply
    215,876.90x = 323,908.41 × 115,920.20
  4. Step 4: Simplify right side
    215,876.90x = 37,547,527,668.88
  5. Step 5: Solve for x
    x = 37,547,527,668.88/215,876.90
  6. Step 6: Final answer
    x = 173,930.27

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1.5x scale

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.