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Finding the Fourth Proportional to 363,641.43, 545,279.52 and 211,887.51

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Solution

The fourth proportional to 363,641.43, 545,279.52 and 211,887.51 is: 317,724.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,641.43 : 545,279.52 = 211,887.51 : x
  2. Step 2: Convert to fraction form
    363,641.43/545,279.52 = 211,887.51/x
  3. Step 3: Cross multiply
    363,641.43x = 545,279.52 × 211,887.51
  4. Step 4: Simplify right side
    363,641.43x = 115,537,919,746.80
  5. Step 5: Solve for x
    x = 115,537,919,746.80/363,641.43
  6. Step 6: Final answer
    x = 317,724.85

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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.