Home / 256,519,853.32-353,987,913.60-139,042,661.22

Finding the Fourth Proportional to 256,519,853.32, 353,987,913.60 and 139,042,661.22

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Solution

The fourth proportional to 256,519,853.32, 353,987,913.60 and 139,042,661.22 is: 191,873,731.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,519,853.32 : 353,987,913.60 = 139,042,661.22 : x
  2. Step 2: Convert to fraction form
    256,519,853.32/353,987,913.60 = 139,042,661.22/x
  3. Step 3: Cross multiply
    256,519,853.32x = 353,987,913.60 × 139,042,661.22
  4. Step 4: Simplify right side
    256,519,853.32x = 49,219,421,546,659,432
  5. Step 5: Solve for x
    x = 49,219,421,546,659,432/256,519,853.32
  6. Step 6: Final answer
    x = 191,873,731.84

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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.