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Finding the Fourth Proportional to 381,540.09, 571,874.73 and 153,689.77

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Solution

The fourth proportional to 381,540.09, 571,874.73 and 153,689.77 is: 230,359.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,540.09 : 571,874.73 = 153,689.77 : x
  2. Step 2: Convert to fraction form
    381,540.09/571,874.73 = 153,689.77/x
  3. Step 3: Cross multiply
    381,540.09x = 571,874.73 × 153,689.77
  4. Step 4: Simplify right side
    381,540.09x = 87,891,295,722.51
  5. Step 5: Solve for x
    x = 87,891,295,722.51/381,540.09
  6. Step 6: Final answer
    x = 230,359.27

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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.