Home / 289,845.20-434,767.80-132,381.20

Finding the Fourth Proportional to 289,845.20, 434,767.80 and 132,381.20

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Solution

The fourth proportional to 289,845.20, 434,767.80 and 132,381.20 is: 198,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,845.20 : 434,767.80 = 132,381.20 : x
  2. Step 2: Convert to fraction form
    289,845.20/434,767.80 = 132,381.20/x
  3. Step 3: Cross multiply
    289,845.20x = 434,767.80 × 132,381.20
  4. Step 4: Simplify right side
    289,845.20x = 57,555,083,085.36
  5. Step 5: Solve for x
    x = 57,555,083,085.36/289,845.20
  6. Step 6: Final answer
    x = 198,571.80

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1.5x scale

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.