Home / 289,961.03-434,981.09-168,438.66

Finding the Fourth Proportional to 289,961.03, 434,981.09 and 168,438.66

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Solution

The fourth proportional to 289,961.03, 434,981.09 and 168,438.66 is: 252,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,961.03 : 434,981.09 = 168,438.66 : x
  2. Step 2: Convert to fraction form
    289,961.03/434,981.09 = 168,438.66/x
  3. Step 3: Cross multiply
    289,961.03x = 434,981.09 × 168,438.66
  4. Step 4: Simplify right side
    289,961.03x = 73,267,629,767.39
  5. Step 5: Solve for x
    x = 73,267,629,767.39/289,961.03
  6. Step 6: Final answer
    x = 252,680.95

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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.