Home / 221,638.14-332,356.05-79,428.46

Finding the Fourth Proportional to 221,638.14, 332,356.05 and 79,428.46

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Solution

The fourth proportional to 221,638.14, 332,356.05 and 79,428.46 is: 119,106.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,638.14 : 332,356.05 = 79,428.46 : x
  2. Step 2: Convert to fraction form
    221,638.14/332,356.05 = 79,428.46/x
  3. Step 3: Cross multiply
    221,638.14x = 332,356.05 × 79,428.46
  4. Step 4: Simplify right side
    221,638.14x = 26,398,528,826.04
  5. Step 5: Solve for x
    x = 26,398,528,826.04/221,638.14
  6. Step 6: Final answer
    x = 119,106.44

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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.