Home / 421,721.87-581,990.67-230,735.23

Finding the Fourth Proportional to 421,721.87, 581,990.67 and 230,735.23

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Solution

The fourth proportional to 421,721.87, 581,990.67 and 230,735.23 is: 318,422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,721.87 : 581,990.67 = 230,735.23 : x
  2. Step 2: Convert to fraction form
    421,721.87/581,990.67 = 230,735.23/x
  3. Step 3: Cross multiply
    421,721.87x = 581,990.67 × 230,735.23
  4. Step 4: Simplify right side
    421,721.87x = 134,285,749,645.33
  5. Step 5: Solve for x
    x = 134,285,749,645.33/421,721.87
  6. Step 6: Final answer
    x = 318,422.55

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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.