Home / 386,691,615.64-533,645,770.62-210,491,103.88

Finding the Fourth Proportional to 386,691,615.64, 533,645,770.62 and 210,491,103.88

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Solution

The fourth proportional to 386,691,615.64, 533,645,770.62 and 210,491,103.88 is: 290,483,896.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,691,615.64 : 533,645,770.62 = 210,491,103.88 : x
  2. Step 2: Convert to fraction form
    386,691,615.64/533,645,770.62 = 210,491,103.88/x
  3. Step 3: Cross multiply
    386,691,615.64x = 533,645,770.62 × 210,491,103.88
  4. Step 4: Simplify right side
    386,691,615.64x = 112,327,687,338,697,072
  5. Step 5: Solve for x
    x = 112,327,687,338,697,072/386,691,615.64
  6. Step 6: Final answer
    x = 290,483,896.72

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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.