Home / 256,961,129.52-354,606,808.56-139,486,539.36

Finding the Fourth Proportional to 256,961,129.52, 354,606,808.56 and 139,486,539.36

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Solution

The fourth proportional to 256,961,129.52, 354,606,808.56 and 139,486,539.36 is: 192,491,668.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,961,129.52 : 354,606,808.56 = 139,486,539.36 : x
  2. Step 2: Convert to fraction form
    256,961,129.52/354,606,808.56 = 139,486,539.36/x
  3. Step 3: Cross multiply
    256,961,129.52x = 354,606,808.56 × 139,486,539.36
  4. Step 4: Simplify right side
    256,961,129.52x = 49,462,876,559,528,432
  5. Step 5: Solve for x
    x = 49,462,876,559,528,432/256,961,129.52
  6. Step 6: Final answer
    x = 192,491,668.49

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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.