Home / 256,073,911.80-353,381,971.98-138,599,221.44

Finding the Fourth Proportional to 256,073,911.80, 353,381,971.98 and 138,599,221.44

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Solution

The fourth proportional to 256,073,911.80, 353,381,971.98 and 138,599,221.44 is: 191,266,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,073,911.80 : 353,381,971.98 = 138,599,221.44 : x
  2. Step 2: Convert to fraction form
    256,073,911.80/353,381,971.98 = 138,599,221.44/x
  3. Step 3: Cross multiply
    256,073,911.80x = 353,381,971.98 × 138,599,221.44
  4. Step 4: Simplify right side
    256,073,911.80x = 48,978,466,187,359,896
  5. Step 5: Solve for x
    x = 48,978,466,187,359,896/256,073,911.80
  6. Step 6: Final answer
    x = 191,266,911.35

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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.