Home / 386,253,455.36-533,019,138.56-212,413,199.36

Finding the Fourth Proportional to 386,253,455.36, 533,019,138.56 and 212,413,199.36

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Solution

The fourth proportional to 386,253,455.36, 533,019,138.56 and 212,413,199.36 is: 293,124,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,253,455.36 : 533,019,138.56 = 212,413,199.36 : x
  2. Step 2: Convert to fraction form
    386,253,455.36/533,019,138.56 = 212,413,199.36/x
  3. Step 3: Cross multiply
    386,253,455.36x = 533,019,138.56 × 212,413,199.36
  4. Step 4: Simplify right side
    386,253,455.36x = 113,220,300,541,640,752
  5. Step 5: Solve for x
    x = 113,220,300,541,640,752/386,253,455.36
  6. Step 6: Final answer
    x = 293,124,369.43

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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.