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Finding the Fourth Proportional to 486,022.87, 728,950.29 and 219,721.51

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Solution

The fourth proportional to 486,022.87, 728,950.29 and 219,721.51 is: 329,544.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,022.87 : 728,950.29 = 219,721.51 : x
  2. Step 2: Convert to fraction form
    486,022.87/728,950.29 = 219,721.51/x
  3. Step 3: Cross multiply
    486,022.87x = 728,950.29 × 219,721.51
  4. Step 4: Simplify right side
    486,022.87x = 160,166,058,433.74
  5. Step 5: Solve for x
    x = 160,166,058,433.74/486,022.87
  6. Step 6: Final answer
    x = 329,544.28

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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.