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Finding the Fourth Proportional to 375,644.91, 518,088.39 and 330,226.59

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Solution

The fourth proportional to 375,644.91, 518,088.39 and 330,226.59 is: 455,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,644.91 : 518,088.39 = 330,226.59 : x
  2. Step 2: Convert to fraction form
    375,644.91/518,088.39 = 330,226.59/x
  3. Step 3: Cross multiply
    375,644.91x = 518,088.39 × 330,226.59
  4. Step 4: Simplify right side
    375,644.91x = 171,086,562,348.29
  5. Step 5: Solve for x
    x = 171,086,562,348.29/375,644.91
  6. Step 6: Final answer
    x = 455,447.57

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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.