Home / 330,145.20-493,905.60-286,259.40

Finding the Fourth Proportional to 330,145.20, 493,905.60 and 286,259.40

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Solution

The fourth proportional to 330,145.20, 493,905.60 and 286,259.40 is: 428,251.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,145.20 : 493,905.60 = 286,259.40 : x
  2. Step 2: Convert to fraction form
    330,145.20/493,905.60 = 286,259.40/x
  3. Step 3: Cross multiply
    330,145.20x = 493,905.60 × 286,259.40
  4. Step 4: Simplify right side
    330,145.20x = 141,385,120,712.64
  5. Step 5: Solve for x
    x = 141,385,120,712.64/330,145.20
  6. Step 6: Final answer
    x = 428,251.33

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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.