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Finding the Fourth Proportional to 221,675.90, 305,268.42 and 192,590.82

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Solution

The fourth proportional to 221,675.90, 305,268.42 and 192,590.82 is: 265,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,675.90 : 305,268.42 = 192,590.82 : x
  2. Step 2: Convert to fraction form
    221,675.90/305,268.42 = 192,590.82/x
  3. Step 3: Cross multiply
    221,675.90x = 305,268.42 × 192,590.82
  4. Step 4: Simplify right side
    221,675.90x = 58,791,895,327.90
  5. Step 5: Solve for x
    x = 58,791,895,327.90/221,675.90
  6. Step 6: Final answer
    x = 265,215.55

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1.5x scale

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.