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Finding the Fourth Proportional to 301,206,912.17, 415,830,472.52 and 210,819,518.60

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Solution

The fourth proportional to 301,206,912.17, 415,830,472.52 and 210,819,518.60 is: 291,046,375.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,206,912.17 : 415,830,472.52 = 210,819,518.60 : x
  2. Step 2: Convert to fraction form
    301,206,912.17/415,830,472.52 = 210,819,518.60/x
  3. Step 3: Cross multiply
    301,206,912.17x = 415,830,472.52 × 210,819,518.60
  4. Step 4: Simplify right side
    301,206,912.17x = 87,665,180,032,743,680
  5. Step 5: Solve for x
    x = 87,665,180,032,743,680/301,206,912.17
  6. Step 6: Final answer
    x = 291,046,375.41

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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.