Home / 311,898,455.40-467,847,683.10-81,890,790.60

Finding the Fourth Proportional to 311,898,455.40, 467,847,683.10 and 81,890,790.60

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Solution

The fourth proportional to 311,898,455.40, 467,847,683.10 and 81,890,790.60 is: 122,836,185.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,898,455.40 : 467,847,683.10 = 81,890,790.60 : x
  2. Step 2: Convert to fraction form
    311,898,455.40/467,847,683.10 = 81,890,790.60/x
  3. Step 3: Cross multiply
    311,898,455.40x = 467,847,683.10 × 81,890,790.60
  4. Step 4: Simplify right side
    311,898,455.40x = 38,312,416,649,437,256
  5. Step 5: Solve for x
    x = 38,312,416,649,437,256/311,898,455.40
  6. Step 6: Final answer
    x = 122,836,185.90

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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.