Home / 256,023,010.31-383,878,999.71-100,390,367.66

Finding the Fourth Proportional to 256,023,010.31, 383,878,999.71 and 100,390,367.66

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Solution

The fourth proportional to 256,023,010.31, 383,878,999.71 and 100,390,367.66 is: 150,524,571.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,023,010.31 : 383,878,999.71 = 100,390,367.66 : x
  2. Step 2: Convert to fraction form
    256,023,010.31/383,878,999.71 = 100,390,367.66/x
  3. Step 3: Cross multiply
    256,023,010.31x = 383,878,999.71 × 100,390,367.66
  4. Step 4: Simplify right side
    256,023,010.31x = 38,537,753,915,920,536
  5. Step 5: Solve for x
    x = 38,537,753,915,920,536/256,023,010.31
  6. Step 6: Final answer
    x = 150,524,571.48

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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.