Home / 305,108,758.17-421,139,694.22-199,278,352.40

Finding the Fourth Proportional to 305,108,758.17, 421,139,694.22 and 199,278,352.40

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Solution

The fourth proportional to 305,108,758.17, 421,139,694.22 and 199,278,352.40 is: 275,062,652.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,108,758.17 : 421,139,694.22 = 199,278,352.40 : x
  2. Step 2: Convert to fraction form
    305,108,758.17/421,139,694.22 = 199,278,352.40/x
  3. Step 3: Cross multiply
    305,108,758.17x = 421,139,694.22 × 199,278,352.40
  4. Step 4: Simplify right side
    305,108,758.17x = 83,924,024,391,797,504
  5. Step 5: Solve for x
    x = 83,924,024,391,797,504/305,108,758.17
  6. Step 6: Final answer
    x = 275,062,652.72

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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.