Home / 256,871,661.62-354,483,121.65-139,396,992.18

Finding the Fourth Proportional to 256,871,661.62, 354,483,121.65 and 139,396,992.18

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Solution

The fourth proportional to 256,871,661.62, 354,483,121.65 and 139,396,992.18 is: 192,367,973.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,871,661.62 : 354,483,121.65 = 139,396,992.18 : x
  2. Step 2: Convert to fraction form
    256,871,661.62/354,483,121.65 = 139,396,992.18/x
  3. Step 3: Cross multiply
    256,871,661.62x = 354,483,121.65 × 139,396,992.18
  4. Step 4: Simplify right side
    256,871,661.62x = 49,413,880,936,587,040
  5. Step 5: Solve for x
    x = 49,413,880,936,587,040/256,871,661.62
  6. Step 6: Final answer
    x = 192,367,973.27

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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.