Home / 256,519,807.95-353,987,851.28-139,042,615.98

Finding the Fourth Proportional to 256,519,807.95, 353,987,851.28 and 139,042,615.98

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Solution

The fourth proportional to 256,519,807.95, 353,987,851.28 and 139,042,615.98 is: 191,873,669.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,519,807.95 : 353,987,851.28 = 139,042,615.98 : x
  2. Step 2: Convert to fraction form
    256,519,807.95/353,987,851.28 = 139,042,615.98/x
  3. Step 3: Cross multiply
    256,519,807.95x = 353,987,851.28 × 139,042,615.98
  4. Step 4: Simplify right side
    256,519,807.95x = 49,219,396,866,415,168
  5. Step 5: Solve for x
    x = 49,219,396,866,415,168/256,519,807.95
  6. Step 6: Final answer
    x = 191,873,669.56

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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.