Home / 391,022,087.78-539,616,008.16-214,826,367.17

Finding the Fourth Proportional to 391,022,087.78, 539,616,008.16 and 214,826,367.17

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Solution

The fourth proportional to 391,022,087.78, 539,616,008.16 and 214,826,367.17 is: 296,463,423.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,022,087.78 : 539,616,008.16 = 214,826,367.17 : x
  2. Step 2: Convert to fraction form
    391,022,087.78/539,616,008.16 = 214,826,367.17/x
  3. Step 3: Cross multiply
    391,022,087.78x = 539,616,008.16 × 214,826,367.17
  4. Step 4: Simplify right side
    391,022,087.78x = 115,923,746,701,138,912
  5. Step 5: Solve for x
    x = 115,923,746,701,138,912/391,022,087.78
  6. Step 6: Final answer
    x = 296,463,423.23

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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.