Home / 391,500,435.17-540,138,383.65-221,936,494.08

Finding the Fourth Proportional to 391,500,435.17, 540,138,383.65 and 221,936,494.08

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Solution

The fourth proportional to 391,500,435.17, 540,138,383.65 and 221,936,494.08 is: 306,197,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,500,435.17 : 540,138,383.65 = 221,936,494.08 : x
  2. Step 2: Convert to fraction form
    391,500,435.17/540,138,383.65 = 221,936,494.08/x
  3. Step 3: Cross multiply
    391,500,435.17x = 540,138,383.65 × 221,936,494.08
  4. Step 4: Simplify right side
    391,500,435.17x = 119,876,419,182,063,456
  5. Step 5: Solve for x
    x = 119,876,419,182,063,456/391,500,435.17
  6. Step 6: Final answer
    x = 306,197,409.80

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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.