Home / 305,910,709.76-422,156,840.21-166,681,471.52

Finding the Fourth Proportional to 305,910,709.76, 422,156,840.21 and 166,681,471.52

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Solution

The fourth proportional to 305,910,709.76, 422,156,840.21 and 166,681,471.52 is: 230,020,463.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,910,709.76 : 422,156,840.21 = 166,681,471.52 : x
  2. Step 2: Convert to fraction form
    305,910,709.76/422,156,840.21 = 166,681,471.52/x
  3. Step 3: Cross multiply
    305,910,709.76x = 422,156,840.21 × 166,681,471.52
  4. Step 4: Simplify right side
    305,910,709.76x = 70,365,723,338,436,304
  5. Step 5: Solve for x
    x = 70,365,723,338,436,304/305,910,709.76
  6. Step 6: Final answer
    x = 230,020,463.79

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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.