Home / 388,363,018.88-535,919,456.32-212,115,922.56

Finding the Fourth Proportional to 388,363,018.88, 535,919,456.32 and 212,115,922.56

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Solution

The fourth proportional to 388,363,018.88, 535,919,456.32 and 212,115,922.56 is: 292,708,224.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,363,018.88 : 535,919,456.32 = 212,115,922.56 : x
  2. Step 2: Convert to fraction form
    388,363,018.88/535,919,456.32 = 212,115,922.56/x
  3. Step 3: Cross multiply
    388,363,018.88x = 535,919,456.32 × 212,115,922.56
  4. Step 4: Simplify right side
    388,363,018.88x = 113,677,049,895,170,416
  5. Step 5: Solve for x
    x = 113,677,049,895,170,416/388,363,018.88
  6. Step 6: Final answer
    x = 292,708,224.96

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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.