Home / 402,939.20-603,679.80-192,112.40

Finding the Fourth Proportional to 402,939.20, 603,679.80 and 192,112.40

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Solution

The fourth proportional to 402,939.20, 603,679.80 and 192,112.40 is: 287,821.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,939.20 : 603,679.80 = 192,112.40 : x
  2. Step 2: Convert to fraction form
    402,939.20/603,679.80 = 192,112.40/x
  3. Step 3: Cross multiply
    402,939.20x = 603,679.80 × 192,112.40
  4. Step 4: Simplify right side
    402,939.20x = 115,974,375,209.52
  5. Step 5: Solve for x
    x = 115,974,375,209.52/402,939.20
  6. Step 6: Final answer
    x = 287,821.03

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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.