Home / 279,221,936.88-418,288,031.50-217,522,197.20

Finding the Fourth Proportional to 279,221,936.88, 418,288,031.50 and 217,522,197.20

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Solution

The fourth proportional to 279,221,936.88, 418,288,031.50 and 217,522,197.20 is: 325,858,822.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,221,936.88 : 418,288,031.50 = 217,522,197.20 : x
  2. Step 2: Convert to fraction form
    279,221,936.88/418,288,031.50 = 217,522,197.20/x
  3. Step 3: Cross multiply
    279,221,936.88x = 418,288,031.50 × 217,522,197.20
  4. Step 4: Simplify right side
    279,221,936.88x = 90,986,931,674,342,800
  5. Step 5: Solve for x
    x = 90,986,931,674,342,800/279,221,936.88
  6. Step 6: Final answer
    x = 325,858,822.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.