Home / 391,464,789.44-540,236,974.56-215,267,230.40

Finding the Fourth Proportional to 391,464,789.44, 540,236,974.56 and 215,267,230.40

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Solution

The fourth proportional to 391,464,789.44, 540,236,974.56 and 215,267,230.40 is: 297,077,337.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,464,789.44 : 540,236,974.56 = 215,267,230.40 : x
  2. Step 2: Convert to fraction form
    391,464,789.44/540,236,974.56 = 215,267,230.40/x
  3. Step 3: Cross multiply
    391,464,789.44x = 540,236,974.56 × 215,267,230.40
  4. Step 4: Simplify right side
    391,464,789.44x = 116,295,317,273,206,448
  5. Step 5: Solve for x
    x = 116,295,317,273,206,448/391,464,789.44
  6. Step 6: Final answer
    x = 297,077,337.25

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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.