Home / 354,925,266.39-489,787,844.12-198,293,549.71

Finding the Fourth Proportional to 354,925,266.39, 489,787,844.12 and 198,293,549.71

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Solution

The fourth proportional to 354,925,266.39, 489,787,844.12 and 198,293,549.71 is: 273,640,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,925,266.39 : 489,787,844.12 = 198,293,549.71 : x
  2. Step 2: Convert to fraction form
    354,925,266.39/489,787,844.12 = 198,293,549.71/x
  3. Step 3: Cross multiply
    354,925,266.39x = 489,787,844.12 × 198,293,549.71
  4. Step 4: Simplify right side
    354,925,266.39x = 97,121,770,215,362,960
  5. Step 5: Solve for x
    x = 97,121,770,215,362,960/354,925,266.39
  6. Step 6: Final answer
    x = 273,640,057.25

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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.