Home / 454,429.80-681,638.30-205,111.40

Finding the Fourth Proportional to 454,429.80, 681,638.30 and 205,111.40

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Solution

The fourth proportional to 454,429.80, 681,638.30 and 205,111.40 is: 307,664.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,429.80 : 681,638.30 = 205,111.40 : x
  2. Step 2: Convert to fraction form
    454,429.80/681,638.30 = 205,111.40/x
  3. Step 3: Cross multiply
    454,429.80x = 681,638.30 × 205,111.40
  4. Step 4: Simplify right side
    454,429.80x = 139,811,786,006.62
  5. Step 5: Solve for x
    x = 139,811,786,006.62/454,429.80
  6. Step 6: Final answer
    x = 307,664.21

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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.