Home / 320,426,138.20-480,639,207.30-199,493,786.20

Finding the Fourth Proportional to 320,426,138.20, 480,639,207.30 and 199,493,786.20

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Solution

The fourth proportional to 320,426,138.20, 480,639,207.30 and 199,493,786.20 is: 299,240,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,426,138.20 : 480,639,207.30 = 199,493,786.20 : x
  2. Step 2: Convert to fraction form
    320,426,138.20/480,639,207.30 = 199,493,786.20/x
  3. Step 3: Cross multiply
    320,426,138.20x = 480,639,207.30 × 199,493,786.20
  4. Step 4: Simplify right side
    320,426,138.20x = 95,884,535,260,443,680
  5. Step 5: Solve for x
    x = 95,884,535,260,443,680/320,426,138.20
  6. Step 6: Final answer
    x = 299,240,679.30

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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.