Home / 380,890,100,392.03-525,628,424,338.15-209,612,031,881.55

Finding the Fourth Proportional to 380,890,100,392.03, 525,628,424,338.15 and 209,612,031,881.55

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Solution

The fourth proportional to 380,890,100,392.03, 525,628,424,338.15 and 209,612,031,881.55 is: 289,264,651,212.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,890,100,392.03 : 525,628,424,338.15 = 209,612,031,881.55 : x
  2. Step 2: Convert to fraction form
    380,890,100,392.03/525,628,424,338.15 = 209,612,031,881.55/x
  3. Step 3: Cross multiply
    380,890,100,392.03x = 525,628,424,338.15 × 209,612,031,881.55
  4. Step 4: Simplify right side
    380,890,100,392.03x = 110,178,042,040,217,187,123,200
  5. Step 5: Solve for x
    x = 110,178,042,040,217,187,123,200/380,890,100,392.03
  6. Step 6: Final answer
    x = 289,264,651,212.56

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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.