Home / 428,933.32-643,498.82-148,450.57

Finding the Fourth Proportional to 428,933.32, 643,498.82 and 148,450.57

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Solution

The fourth proportional to 428,933.32, 643,498.82 and 148,450.57 is: 222,710.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,933.32 : 643,498.82 = 148,450.57 : x
  2. Step 2: Convert to fraction form
    428,933.32/643,498.82 = 148,450.57/x
  3. Step 3: Cross multiply
    428,933.32x = 643,498.82 × 148,450.57
  4. Step 4: Simplify right side
    428,933.32x = 95,527,766,623.33
  5. Step 5: Solve for x
    x = 95,527,766,623.33/428,933.32
  6. Step 6: Final answer
    x = 222,710.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.