Home / 315,238,830.49-472,448,039.66-128,274,841.97

Finding the Fourth Proportional to 315,238,830.49, 472,448,039.66 and 128,274,841.97

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Solution

The fourth proportional to 315,238,830.49, 472,448,039.66 and 128,274,841.97 is: 192,245,344.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,238,830.49 : 472,448,039.66 = 128,274,841.97 : x
  2. Step 2: Convert to fraction form
    315,238,830.49/472,448,039.66 = 128,274,841.97/x
  3. Step 3: Cross multiply
    315,238,830.49x = 472,448,039.66 × 128,274,841.97
  4. Step 4: Simplify right side
    315,238,830.49x = 60,603,197,626,422,792
  5. Step 5: Solve for x
    x = 60,603,197,626,422,792/315,238,830.49
  6. Step 6: Final answer
    x = 192,245,344.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.