Home / 290,332,778.56-400,390,106.88-211,892,084.80

Finding the Fourth Proportional to 290,332,778.56, 400,390,106.88 and 211,892,084.80

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Solution

The fourth proportional to 290,332,778.56, 400,390,106.88 and 211,892,084.80 is: 292,214,661.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,332,778.56 : 400,390,106.88 = 211,892,084.80 : x
  2. Step 2: Convert to fraction form
    290,332,778.56/400,390,106.88 = 211,892,084.80/x
  3. Step 3: Cross multiply
    290,332,778.56x = 400,390,106.88 × 211,892,084.80
  4. Step 4: Simplify right side
    290,332,778.56x = 84,839,494,480,098,032
  5. Step 5: Solve for x
    x = 84,839,494,480,098,032/290,332,778.56
  6. Step 6: Final answer
    x = 292,214,661.06

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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.