Home / 445,560,031.82-668,476,881.03-212,687,900.30

Finding the Fourth Proportional to 445,560,031.82, 668,476,881.03 and 212,687,900.30

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Solution

The fourth proportional to 445,560,031.82, 668,476,881.03 and 212,687,900.30 is: 319,097,167.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,560,031.82 : 668,476,881.03 = 212,687,900.30 : x
  2. Step 2: Convert to fraction form
    445,560,031.82/668,476,881.03 = 212,687,900.30/x
  3. Step 3: Cross multiply
    445,560,031.82x = 668,476,881.03 × 212,687,900.30
  4. Step 4: Simplify right side
    445,560,031.82x = 142,176,944,222,021,200
  5. Step 5: Solve for x
    x = 142,176,944,222,021,200/445,560,031.82
  6. Step 6: Final answer
    x = 319,097,167.77

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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.