Home / 330,143.20-493,902.60-286,257.40

Finding the Fourth Proportional to 330,143.20, 493,902.60 and 286,257.40

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Solution

The fourth proportional to 330,143.20, 493,902.60 and 286,257.40 is: 428,248.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,143.20 : 493,902.60 = 286,257.40 : x
  2. Step 2: Convert to fraction form
    330,143.20/493,902.60 = 286,257.40/x
  3. Step 3: Cross multiply
    330,143.20x = 493,902.60 × 286,257.40
  4. Step 4: Simplify right side
    330,143.20x = 141,383,274,129.24
  5. Step 5: Solve for x
    x = 141,383,274,129.24/330,143.20
  6. Step 6: Final answer
    x = 428,248.33

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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.