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Finding the Fourth Proportional to 391,010.52, 539,594.24 and 212,162.52

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Solution

The fourth proportional to 391,010.52, 539,594.24 and 212,162.52 is: 292,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,010.52 : 539,594.24 = 212,162.52 : x
  2. Step 2: Convert to fraction form
    391,010.52/539,594.24 = 212,162.52/x
  3. Step 3: Cross multiply
    391,010.52x = 539,594.24 × 212,162.52
  4. Step 4: Simplify right side
    391,010.52x = 114,481,673,735.89
  5. Step 5: Solve for x
    x = 114,481,673,735.89/391,010.52
  6. Step 6: Final answer
    x = 292,784.13

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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.