Home / 311,086,037,407.20-429,367,794,117.24-189,124,856,659.32

Finding the Fourth Proportional to 311,086,037,407.20, 429,367,794,117.24 and 189,124,856,659.32

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Solution

The fourth proportional to 311,086,037,407.20, 429,367,794,117.24 and 189,124,856,659.32 is: 261,034,288,756.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,086,037,407.20 : 429,367,794,117.24 = 189,124,856,659.32 : x
  2. Step 2: Convert to fraction form
    311,086,037,407.20/429,367,794,117.24 = 189,124,856,659.32/x
  3. Step 3: Cross multiply
    311,086,037,407.20x = 429,367,794,117.24 × 189,124,856,659.32
  4. Step 4: Simplify right side
    311,086,037,407.20x = 81,204,122,516,551,440,007,168
  5. Step 5: Solve for x
    x = 81,204,122,516,551,440,007,168/311,086,037,407.20
  6. Step 6: Final answer
    x = 261,034,288,756.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.