Home / 256,131,511.20-353,461,599.56-138,656,837.64

Finding the Fourth Proportional to 256,131,511.20, 353,461,599.56 and 138,656,837.64

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Solution

The fourth proportional to 256,131,511.20, 353,461,599.56 and 138,656,837.64 is: 191,346,497.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,131,511.20 : 353,461,599.56 = 138,656,837.64 : x
  2. Step 2: Convert to fraction form
    256,131,511.20/353,461,599.56 = 138,656,837.64/x
  3. Step 3: Cross multiply
    256,131,511.20x = 353,461,599.56 × 138,656,837.64
  4. Step 4: Simplify right side
    256,131,511.20x = 49,009,867,622,165,608
  5. Step 5: Solve for x
    x = 49,009,867,622,165,608/256,131,511.20
  6. Step 6: Final answer
    x = 191,346,497.71

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1.5x scale

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.