Home / 311,443,371.20-467,165,056.80-81,435,706.40

Finding the Fourth Proportional to 311,443,371.20, 467,165,056.80 and 81,435,706.40

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Solution

The fourth proportional to 311,443,371.20, 467,165,056.80 and 81,435,706.40 is: 122,153,559.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,443,371.20 : 467,165,056.80 = 81,435,706.40 : x
  2. Step 2: Convert to fraction form
    311,443,371.20/467,165,056.80 = 81,435,706.40/x
  3. Step 3: Cross multiply
    311,443,371.20x = 467,165,056.80 × 81,435,706.40
  4. Step 4: Simplify right side
    311,443,371.20x = 38,043,916,405,904,128
  5. Step 5: Solve for x
    x = 38,043,916,405,904,128/311,443,371.20
  6. Step 6: Final answer
    x = 122,153,559.60

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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.