Home / 391,804,623.63-540,674,144.33-213,189,249.42

Finding the Fourth Proportional to 391,804,623.63, 540,674,144.33 and 213,189,249.42

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Solution

The fourth proportional to 391,804,623.63, 540,674,144.33 and 213,189,249.42 is: 294,192,329.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,804,623.63 : 540,674,144.33 = 213,189,249.42 : x
  2. Step 2: Convert to fraction form
    391,804,623.63/540,674,144.33 = 213,189,249.42/x
  3. Step 3: Cross multiply
    391,804,623.63x = 540,674,144.33 × 213,189,249.42
  4. Step 4: Simplify right side
    391,804,623.63x = 115,265,915,010,513,456
  5. Step 5: Solve for x
    x = 115,265,915,010,513,456/391,804,623.63
  6. Step 6: Final answer
    x = 294,192,329.69

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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.